IDE inlay hints and quick actions using CLI

## Specific Demand

It would be super useful to have inlay hints/quick actions for VSCode to give debug visibility and custom runners for components and the main app.

For example, RA inserts "run" and "debug" as quick action options for the `main` function for regular Rust. We could supercharge this with "serve" which uses the CLI to turn on things like assets, hotreloading, lints, etc which should help the newbie experience.

Also, the millionjs folks added some perf inlay hints for components - we could add a few helpful inlay hints:
- log!() - the results get bubbled into the IDE
- #[component] - gives you the ability to preview and/or mock components using current data
- use_signal() - gives you an interactive way to modify running state
- main - add a serve command with different platform configs (serve web, serve desktop, etc)
- style {} or include_css! gives you some options to configure the asset loading
- extracting components out from existing rsx!
- pasting html into rsx! autoconverts to rsx!
- use_memo/use_effect show the signals they capture and metadata like run count