ContextKeys are missing and not properly defined

[fanantoxa]

Current implementation of src\Model\ContextKeys.re not fully correct

It missing both textInputFocus and menuFocus
The were removed here #786 but wasn't added back anywhere.

Also after looking in ContextKeys.re I've noticed that other key also not propely defined.
For example editorTextFocus

| TerminalInsert
| TerminalNormal
| TerminalVisual(_) => false
| _ => true

Basically it say that it on focus all the time but not terminal.
And there kinda wrong because you might be in Menu, Search, WildMenu, and other places at this moment.

That why paste into text input currently work in insertMode and also work when I add editorTextFocus

Same goes for terminalFocus
is active when

| TerminalInsert
| TerminalNormal
| TerminalVisual(_) => true
| _ => false

But still can open menu or smth.

Can we refine and refactor this to be more persistent and clear about different ContextKeys?
It already blocking me from further improving textInputs and few other things.
In addition we have Keybinding Suggestions and Contribution Opportunities
as good-first-issue and people going to be confused while working on it.

[fanantoxa]

@bryphe I see 2 PR that fix this issue. Nice work!

[bryphe]

Awesome! Thanks @fanantoxa for confirming, appreciate the help

I added a (ugly) debug UI to help troubleshoot these sorts of issues as well:

Let me know if you see any other context keys that are incorrect 👍