Support Returning primitive value type arrays

[badcel]

PrimitiveValueTypeArrays should at least implemented via those converters:

• PrimitiveValueTypeArray
• LongArray
• ULongArray
• CLongArray
• CULongArray

For all return values there should be support for:

• Pointed arrays
• Unpointed arrays

Ownership transfer should support:

• Full transfer
• No transfer

It is not clear how important it is to support the return of primitive value type arrays. Currently there is only limited support for pointed arrays which are returned as IntPtr in the public API.