Jetbrains cursorless support

[asoee]

This add support for cursorless in jetbrains, by adding a new package, where the output bundle can be embedded in the jetbrains plugin. (Currently maintained here: (https://github.com/asoee/cursorless-jetbrains))
It currently support most of the core functionality of cursorless: hats, selection, edits, flashing, treesitter, and some navigation commands.

It does not (yet) support:

• highlights
• tutorial
• cheatsheet

Caveats:

• It currently relies on manual cop/paste of the output bundle to the jetbrains plugin.
• tresitter support requires manual copy/paste of wasm/configuration files from the VSCode extension.

Checklist

• I have added tests
• I have updated the docs and cheatsheet
• I have not broken the cheatsheet

[pokey]

@asoee would it be helpful for me to have a look at this point? Also, would be useful to have a quick blurb in description to indicate what's supported by this PR. Eg I'm assuming this PR doesn't support tree-sitter?

[asoee]

@pokey yes, please take a look.
I think it is slowly stabilizing now.
While the plugin does support tree-sitter. it is still the manual copy/paste way, and i have not looked into the treesitter-changes we discussed. Focus have been on making the plugin usable.