Consider using a tool to generate c bindings over manual creation

Right now the api is generated by hand by referencing the wasmtime c library headers. We could automate this process which would make it easier to catch issues and make updates.

See:

Doing a little more digging, and it seems we could use a tool like https://github.com/dotnet/clangsharp?tab=readme-ov-file#generating-bindings to point at header files and generate c#. This would require a bit of changes to the project but would help catch the changes to files.

_Originally posted by @jsturtevant in https://github.com/bytecodealliance/wasmtime-dotnet/issues/315#issuecomment-2211240505_