[DPG] Use const& and std::move to avoid copies

[vkucera]

Mostly done automatically by Clang-Tidy.

[github-actions]

O2 linter results: ❌ 280 errors, ⚠️ 175 warnings, 🔕 60 disabled

[alibuild]

Error while checking build/O2Physics/code-check for f675b45 at 2026-09-01 23:50:

## sw/BUILD/O2Physics-code-check-latest/log
--
========== List of issues found ==========
++ echo 'Found 152 errors and 557 warnings.'
Found 152 errors and 557 warnings.
++ [[ 152 -gt 0 ]]
++ cat /sw/BUILD/78bdf915c42202c73024265bb87be40db0365f9e/O2Physics-code-check/errors.txt
DPG/Tasks/AOTEvent/detectorOccupancyQa.cxx:56:8: error: constructor does not initialize these fields: ccdb, nOrbits, minOrbit [cppcoreguidelines-pro-type-member-init,-warnings-as-errors]
DPG/Tasks/AOTEvent/detectorOccupancyQa.cxx:165:30: error: do not use reinterpret_cast [cppcoreguidelines-pro-type-reinterpret-cast,-warnings-as-errors]
DPG/Tasks/AOTEvent/detectorOccupancyQa.cxx:186:20: error: narrowing conversion from 'double' to 'int' [bugprone-narrowing-conversions,-warnings-as-errors]
DPG/Tasks/AOTEvent/detectorOccupancyQa.cxx:414:19: error: narrowing conversion from 'float' to 'int' [bugprone-narrowing-conversions,-warnings-as-errors]
DPG/Tasks/AOTEvent/detectorOccupancyQa.cxx:415:32: error: narrowing conversion from 'float' to 'int' [bugprone-narrowing-conversions,-warnings-as-errors]
DPG/Tasks/AOTEvent/detectorOccupancyQa.cxx:418:21: error: narrowing conversion from 'float' to 'int' [bugprone-narrowing-conversions,-warnings-as-errors]
DPG/Tasks/AOTEvent/detectorOccupancyQa.cxx:457:7: error: 'push_back' is called inside a loop; consider pre-allocating the container capacity before the loop [performance-inefficient-vector-operation,-warnings-as-errors]
DPG/Tasks/AOTEvent/detectorOccupancyQa.cxx:941:31: error: narrowing conversion from 'Double_t' (aka 'double') to 'int' [bugprone-narrowing-conversions,-warnings-as-errors]
DPG/Tasks/AOTEvent/detectorOccupancyQa.cxx:948:30: error: narrowing conversion from 'Double_t' (aka 'double') to 'int' [bugprone-narrowing-conversions,-warnings-as-errors]
DPG/Tasks/AOTEvent/eventSelectionQa.cxx:68:8: error: constructor does not initialize these fields: ccdb [cppcoreguidelines-pro-type-member-init,-warnings-as-errors]
DPG/Tasks/AOTEvent/eventSelectionQa.cxx:114:52: error: conditional operator with identical true and false expressions [bugprone-branch-clone,-warnings-as-errors]
DPG/Tasks/AOTEvent/eventSelectionQa.cxx:114:61: error: 'true' and 'false' expressions are equivalent [misc-redundant-expression,-warnings-as-errors]
DPG/Tasks/AOTEvent/eventSelectionQa.cxx:116:52: error: conditional operator with identical true and false expressions [bugprone-branch-clone,-warnings-as-errors]
DPG/Tasks/AOTEvent/eventSelectionQa.cxx:116:61: error: 'true' and 'false' expressions are equivalent [misc-redundant-expression,-warnings-as-errors]
DPG/Tasks/AOTEvent/eventSelectionQa.cxx:535:36: error: do not implicitly decay an array into a pointer; consider using gsl::array_view or an explicit cast instead [cppcoreguidelines-pro-bounds-array-to-pointer-decay,-warnings-as-errors]
DPG/Tasks/AOTEvent/eventSelectionQa.cxx:538:36: error: do not implicitly decay an array into a pointer; consider using gsl::array_view or an explicit cast instead [cppcoreguidelines-pro-bounds-array-to-pointer-decay,-warnings-as-errors]
DPG/Tasks/AOTEvent/eventSelectionQa.cxx:937:36: error: do not implicitly decay an array into a pointer; consider using gsl::array_view or an explicit cast instead [cppcoreguidelines-pro-bounds-array-to-pointer-decay,-warnings-as-errors]
DPG/Tasks/AOTEvent/eventSelectionQa.cxx:941:36: error: do not implicitly decay an array into a pointer; consider using gsl::array_view or an explicit cast instead [cppcoreguidelines-pro-bounds-array-to-pointer-decay,-warnings-as-errors]
DPG/Tasks/AOTEvent/eventSelectionQa.cxx:1017:26: error: narrowing conversion from 'double' to 'int64_t' (aka 'long') [bugprone-narrowing-conversions,-warnings-as-errors]
DPG/Tasks/AOTEvent/eventSelectionQa.cxx:1140:36: error: do not implicitly decay an array into a pointer; consider using gsl::array_view or an explicit cast instead [cppcoreguidelines-pro-bounds-array-to-pointer-decay,-warnings-as-errors]
DPG/Tasks/AOTEvent/eventSelectionQa.cxx:1143:36: error: do not implicitly decay an array into a pointer; consider using gsl::array_view or an explicit cast instead [cppcoreguidelines-pro-bounds-array-to-pointer-decay,-warnings-as-errors]
DPG/Tasks/AOTEvent/eventSelectionQa.cxx:1178:27: error: narrowing conversion from 'double' to 'int' [bugprone-narrowing-conversions,-warnings-as-errors]
DPG/Tasks/AOTEvent/rofOccupancyQa.cxx:47:8: error: constructor does not initialize these fields: ccdb [cppcoreguidelines-pro-type-member-init,-warnings-as-errors]
DPG/Tasks/AOTEvent/rofOccupancyQa.cxx:820:36: error: narrowing conversion from 'float' to 'value_type' (aka 'int') [bugprone-narrowing-conversions,-warnings-as-errors]
DPG/Tasks/AOTEvent/rofOccupancyQa.cxx:883:42: error: narrowing conversion from 'float' to 'int' [bugprone-narrowing-conversions,-warnings-as-errors]
DPG/Tasks/AOTEvent/rofOccupancyQa.cxx:884:39: error: narrowing conversion from 'float' to 'int' [bugprone-narrowing-conversions,-warnings-as-errors]
DPG/Tasks/AOTTrack/PID/TOF/qaPIDTOFDynamic.cxx:50:8: error: constructor does not initialize these fields: tofResponse, ccdb [cppcoreguidelines-pro-type-member-init,-warnings-as-errors]
DPG/Tasks/AOTTrack/PID/TOF/qaPIDTOFEvTime.cxx:251:31: error: repeated branch body in conditional chain [bugprone-branch-clone,-warnings-as-errors]
DPG/Tasks/AOTTrack/PID/TOF/qaPIDTOFEvTime.cxx:439:7: error: do not use static_cast to downcast from a base to a derived class; use dynamic_cast instead [cppcoreguidelines-pro-type-static-cast-downcast,-warnings-as-errors]
DPG/Tasks/AOTTrack/PID/TOF/qaPIDTOFEvTime.cxx:440:7: error: do not use static_cast to downcast from a base to a derived class; use dynamic_cast instead [cppcoreguidelines-pro-type-static-cast-downcast,-warnings-as-errors]
DPG/Tasks/AOTTrack/PID/TOF/qaPIDTOFEvTime.cxx:441:7: error: do not use static_cast to downcast from a base to a derived class; use dynamic_cast instead [cppcoreguidelines-pro-type-static-cast-downcast,-warnings-as-errors]
DPG/Tasks/AOTTrack/PID/TOF/qaPIDTOFEvTime.cxx:442:7: error: do not use static_cast to downcast from a base to a derived class; use dynamic_cast instead [cppcoreguidelines-pro-type-static-cast-downcast,-warnings-as-errors]
DPG/Tasks/AOTTrack/PID/TOF/qaPIDTOFEvTime.cxx:443:7: error: do not use static_cast to downcast from a base to a derived class; use dynamic_cast instead [cppcoreguidelines-pro-type-static-cast-downcast,-warnings-as-errors]
DPG/Tasks/AOTTrack/PID/TOF/qaPIDTOF.cxx:671:69: error: macro argument should be enclosed in parentheses [bugprone-macro-parentheses,-warnings-as-errors]
DPG/Tasks/AOTTrack/PID/TOF/qaPIDTOF.cxx:691:73: error: macro argument should be enclosed in parentheses [bugprone-macro-parentheses,-warnings-as-errors]
DPG/Tasks/AOTTrack/V0Cascades/perfK0sResolution.cxx:78:8: error: constructor does not initialize these fields: ccdb [cppcoreguidelines-pro-type-member-init,-warnings-as-errors]
DPG/Tasks/AOTTrack/V0Cascades/perfK0sResolution.cxx:139:67: error: do not implicitly decay an array into a pointer; consider using gsl::array_view or an explicit cast instead [cppcoreguidelines-pro-bounds-array-to-pointer-decay,-warnings-as-errors]
DPG/Tasks/AOTTrack/qaEfficiency.cxx:97:46: error: variable 'hPtIts' is non-const and globally accessible, consider making it const [cppcoreguidelines-avoid-non-const-global-variables,-warnings-as-errors]
DPG/Tasks/AOTTrack/qaEfficiency.cxx:98:46: error: variable 'hPtTpc' is non-const and globally accessible, consider making it const [cppcoreguidelines-avoid-non-const-global-variables,-warnings-as-errors]
DPG/Tasks/AOTTrack/qaEfficiency.cxx:99:46: error: variable 'hPtItsTpc' is non-const and globally accessible, consider making it const [cppcoreguidelines-avoid-non-const-global-variables,-warnings-as-errors]
DPG/Tasks/AOTTrack/qaEfficiency.cxx:100:46: error: variable 'hPtItsTof' is non-const and globally accessible, consider making it const [cppcoreguidelines-avoid-non-const-global-variables,-warnings-as-errors]
DPG/Tasks/AOTTrack/qaEfficiency.cxx:101:46: error: variable 'hPtTpcTof' is non-const and globally accessible, consider making it const [cppcoreguidelines-avoid-non-const-global-variables,-warnings-as-errors]
[0 more errors; see full log]

Full log here.