Split into multiple GitHub Actions repositories

Why? This lets you get listed on the GitHub Actions marketplace: https://github.com/marketplace?category=&type=actions&verification=&query=wasmtime https://github.com/marketplace?category=&type=actions&verification=&query=wasm-tools

I would like to transfer these two repositories into the @bytecodealliance organization to make them "official": https://github.com/jcbhmr/setup-wasm-tools https://github.com/jcbhmr/setup-wasmtime . I'm not sure how to do that or if @bytecodealliance is open to that. 🤷‍♀️