Implement deeplink commands for the Raycast Extension

[ItsEeleeya]

Solves 28

Added deep-link command support. The Raycast extension will be able to use these to send commands to Cap. Currently, you can start/stop recording with specified media devices, as well as open your account's Dashboard.

What needs testing: Make sure OAuth still works.

To test on macOS, make sure you first build a debug version of the app via pnpm tauri:build --debug and then "install" it. (Putting the resulted .app into your Applications folder.) Read more about it here You can find the dmg/app at the path below: <repo>/apps/desktop/src-tauri/target/universal-apple-darwin/debug/bundle/[dmg | macos]

Then run the app via pnpm dev

The structure of the deep-link scheme is as caprecorder://:command?parameters

Copy and paste the URI below into a browser to try it out: caprecorder://start-recording?mic_in_label=MacBook%20Pro%20Microphone&vid_in_label=FaceTime%20HD%20Camera

The URI must be encoded. You can also use none as the value for a media device label to disable it.

You can find the source for the extension here

To test the extension, make sure Cap is built with --debug and installed. Then run it in development. Then in the extension directory, run npm install & npm run dev