- Remove Tauri client.
It was useful when initially prototyping the Web Component, but now
it’s more of a maintenance burden. It’s notably not convenient to
check in CI. Since we now have another native alternative that does
not require any GPU (`ironrdp-client`), it’s probably a good time to
part ways.
- Move wasm package into the workspace.
- Move Rust crates into a `crates` subfolder.
- Introduce `xtask` crate for free-form automation.