Component model support

[JanProvaznik]

Context

https://github.com/bytecodealliance/wasmtime/tree/main/examples/component
Add support for making the same example from C#.

https://github.com/WebAssembly/component-model/tree/main
https://github.com/bytecodealliance/componentize-dotnet

Current state:

Only Wasm modules can be instantiated and functions ran from them. Loading .wasm file which is compiled as a component into a Module fails.

Steps

[ ] running components
[ ] imports and exports (with WIT data types)
[ ] converting modules to components
[ ] multiple components interacting

Remarks

This is blocked by bytecodealliance/wasmtime#8036 (comment)

[jsturtevant]

Now that we released wasmtime v22 support, we should have the right version but may need to expose some new apis

[JanProvaznik]

Related:
other language bindings have varying support
bytecodealliance/wasmtime-py#245
bytecodealliance/wasmtime-go#204
bytecodealliance/wasmtime#7801

[jsturtevant]

Since we use the c-api we need bytecodealliance/wasmtime#8036.