Thanks for this! Mind rewording this though based on cmake --build target/c-api --target install? Basically the "install" target should be run to produce the final output structure of the include dir and the lib dir which will have all the relevant artifacts. That'll avoid the need to document the internals of the build directory and asking users to weave together everything themselves.

For documentation if the link isn't already here we should also link to https://docs.wasmtime.dev/c-api/ to avoid users needing to install/configure doxygen themselves locally.