Make extensions able to define their own actions

[vittorius]

Check for existing issues

• [x] Completed

Misc notes

E.g. I'd like to develop an extension providing a simple "settings sync" functionality that can be manually invoked by a keyboard shortcut. The most obvious way to me is that such an extension can provide a new action that can be trivially bound to a keybinding in the keymap.json.

[nobodywasishere]

Extensions can define a tasks.json, which may be what you're looking for

Example: https://github.com/crystal-lang-tools/zed-crystal/blob/main/languages/crystal/tasks.json