Introduce mode property on command bar actions

[FelixMalfait]

We need to refactor actions to build them as a components instead of as an onclick handler.

And then when declaring an action we should be able to set a mode property.

mode = view (component is displayed in sidebar)
mode = no-view (component is loaded in background)

As a first view example we should do a followup of this PR and introduce PDF/Word options.

To build this first view we need to build a simple frontend api for sub-commands like Raycast does: https://developers.raycast.com/api-reference/user-interface/action-panel ; I guess we already built something similar for the first level of action? We just need to make sure the API is as nice and simple

[FelixMalfait]

Maybe no-view = expects a hook / function, and view = expects a React component? Or even inferred dynamically? (not sure it's a good idea)