[C#] The C# exporter functionality is too restrictive

[CurtHagenlocher]

Describe the enhancement requested

For instance,
You can't export buffers backed by ReadOnlyMemory instead of IMemoryOwner
You can't continue to access the array from C# after exporting it

If it's not possible to implement these things "safely", then at least there should be an opt-in way to do them "unsafely".

Component(s)

C#