Wasm CM support in cargo extension

[greenhat]

New project command

Should create a Wasm CM Rust project, so the template should be updated:

• add WIT file
• set Wasm CM metadata in Cargo.toml

Build project command

Start by calling the cargo_component to build the project and switch to use it as a library when our needs grow. We probably would like to avoid forking it but rather building on top of it.

EDIT(denys): I believe building on top of the cargo-component is no longer an option given that we are going to add plenty of customizations touching Cargo.toml (miden packaging), Wasm component building, etc. The only feasible solution I see is to copy the relevant parts of the cargo-component into cargo-miden.

[greenhat]

@bitwalker Do we want the extension to keep the support for building a non-Wasm CM projects as it does today along with Wasm CM? I mean, our whole toolchain will be Wasm CM oriented. Going Wasm CM only for the extension will simplify things a lot, but we would not be able to make a release until almost everything in the Beta1 milestone is implemented.