* [C#] Fix nested structs and arrays in Object API
The adds support for nested structs and fixed size arrays in the C#
Object API codegen which previously generated invalid code that wouldn't
compile.
- Nested structs would originally generate syntax errors due to adding an
additional `.` to separate fields.
- Fixed size arrays of nested structs would originally generate code for
the first field in the top most struct, and would lead to a compiler
error due to referencing undefined variables.
* [C#] fix nested structs and arrays of structs.
* fix nested structs + arrays
* add table support
* Cleanup code
Co-authored-by: mugisoba <mugisoba+github@icloud.com>
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