CbObject/CbBinary/CbArray:
* Added proxy classes for viewing objects in the debugger. CbArray now displays as an array, CbObject displays as an array of fields, etc...
* Removed overloaded "View" methods, which are not required in C# due to GC.
CbWriter:
* Significantly fewer memory allocations/copying. Output buffer is now allocated in large chunks, with length fields only inserted when copying to the final output buffer.
* Methods for writing named/unnamed fields are now more idomatic with other C# serialization classes (ie. WriteXXX(Name, Value) and WriteXXXValue(Value)).
Other:
* Added serialization tests to Horde projects and fixed NuGet dependencies.
[CL 16804192 by Ben Marsh in ue5-main branch]
