File Explorer and Layout Improvements

[pierremtb]

Milestone: https://github.com/KittyCAD/modeling-app/milestone/8
Milestone contributors: @nadr0 @franknoirot

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1. Unify read/write system
   3. XState unification
   4. Full-featured browser version
   5. Editable hotkeys
2. Status bar and top bar ahead of Migrate from Panes to Areas (can be moved and undocked) #7550
   7. Pane system
   9. Global workflows
   8. Buffers

[nadr0]

Related tickets

• File/Editor/Execution Meta ticket #7237
• Global workflows to sync DOM, native file menu, command bar, and business logic. #6032

I would wanna add global workflows to this list as well.

XState unification

On 3. the xstate unification, this proof of concept was done with the SystemIOMachine. Not everything needs to be in this pattern, we want more best practices for each scenario. It is okay to use react patterns for passing and store variable state but we ran into some frustrations with this specifically the context/provider pattern.

I do want to move the FileMachine into SystemIOMachine as a next step.

More ideas

• Feature: improved permissions detection for every folder and file #6049
• Improved native file menu actions

[pierremtb]

I removed '2. Proper undo/redo system' since it's already part of #7461

[pierremtb]

Removed a bunch of things that were more related to this being an 'area' instead of a clear milestone

[pierremtb]

For 1. I'd like to keep only #6878 and then close