* [C#] Add GetBytes methods for fixed arrays
I wanted to direct access to fixed array bytes. I made some changes to the idl generator to create GetBytes functions following the same naming conventions used for vectors of scalar types. There was not a 'Length' field present to bound the existing index accessor so I added that too.
+ Add generic GetBytes for fixed length arrays of scalar types
+ Implement conditional compilation for ENABLE_SPAN_T:
- ENABLE_SPAN_T: Returns `Span<T>` using `MemoryMarshal.Cast<byte, T>()` as needed.
- Else: Returns `ArraySegment<byte>?` for raw byte access
+ Added tests reusing arrays_test.fbs definitions
+ Added const int Length field to support existing index based accessors
* [C#] Sync generated code for after adding GetBytes methods for fixed arrays
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Co-authored-by: Björn Harrtell <bjornharrtell@users.noreply.github.com>