engine tests & Android build

Workflow runs for engine tests & Android build

• Docs: add badge block and expected engine-test output

  completed successfully:
  engine tests & Android build#3:Commitd20b606pushedbyORDNET
  main

  Aug 14, 20261m 26s
  More actions for workflow run 3

• Update test.yml

  completed successfully:
  engine tests & Android build#2:Commitb407452pushedbyORDNET
  main

  Aug 14, 20263m 38s
  More actions for workflow run 2

• Create test.yml

  failed:
  engine tests & Android build#1:Commit0e66249pushedbyORDNET
  main

  Aug 13, 202617s
  More actions for workflow run 1