feat(DataStructure): Fibonacci heap over a record of named cells, part 1 (insert) - #2228

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`Cslib.DataStructure.PriorityQueue.FibonacciHeap.RootList` and `Cslib.DataStructure.PriorityQueue.WordRAM.FibonacciHeap.FibRawInv` (Complexity/DataStructure/PriorityQueue/WordRAM/FibonacciHeap/Forest.lean:641) share a 235-node subterm, 98% of the smaller body, built from `Cslib.DataStructure.PriorityQueue.WordRAM.FibonacciHeap.FHTree`, `List.nil`, `Cslib.DataStructure.PriorityQueue.WordRAM.FibonacciHeap.RawState.minRoot`, `Cslib.DataStructure.PriorityQueue.WordRAM.FibonacciHeap.IsCircList`, `Cslib.DataStructure.PriorityQueue.WordRAM.FibonacciHeap.RawState.left`, `Cslib.DataStructure.PriorityQueue.WordRAM.FibonacciHeap.RawState.right`. Advisory only; see the job summary.