Implement comparisons for all ObjectNodes (dotnet/coreclr#27355)

Implement comparisons for all ObjectNodes (dotnet/coreclr#27355)

* Preparation to introduce parallelism into crossgen2

- Add comparison functions for all object nodes and sort object nodes before they are emitted to the PE.

- Sort ImportSection signatures based on their imports to keep them in sync.

- Add determinism test.

- Change dictionaries in ReadyToRunCodegenNodeFactory and ReadyToRunSymbolNodeFactory to NodeCaches (i.e. ConcurrentDictionary, at the moment)

- Add structs to act as keys for the above NodeCaches (MethodFixupKey, DynamicHelperKey, ReadyToRunHelperKey)

- Synchronize logger

- Update some Dictionaries to ConcurrentDictionary

- Sort GCRefMapNode methods and lock the add since AddImport might be called my multiple threads at once.

- Create RandomInsertStack to speed up randomization when using CoreRT_DeterminismSeed.

Commit migrated from https://github.com/dotnet/coreclr/commit/230117910d7c033eb1025ba350731163e80da9d6