Custom Text View

[thecoolwinter]

Description

Replaces STTextView with a custom TextView implementation. Creates a new TextView and TextViewController classes that manage rendering text, handling text input, and keybinds. TextViewController replaces the STTextViewController class, connecting existing TextFormation classes, syntax highlighting, and other existing text view extensions.

Related Issues

• closes ✨ Custom Text View #208
• closes 🐞 Text scrolls underneath ruler #195
• closes 🐞 Scrollbar twitches around when scrolling large file #184
• closes 🐞 Key event should be released if text view lost focus or after relinquished first responder #57

Checklist

TextView TODOs:

• load text
• render text
• scroll
• wrap text
• resize
• syntax highlighting
• cursor
• edit text
  • isEditable
  • Insert
  • Delete
    • Delete line
    • Delete word
    • Delete character
    • Delete across lines
  • Paste
  • Marked Text
• Line Numbers
• Select text
  • Copy
• Multiple cursors
• Keyboard navigation
  • Arrow keys
  • Command & control arrow keys
  • Page up and down
• Tab widths & indents
• Live parameter updating
• Undo/redo
• Sync system appearance
• Highlight brackets
• TextFormation integration
• MacOS Sonoma cursor Leaving for future PR. Will require rework of cursor view system.
• Update text from SwiftUI Binding (two-way binding)
• Accessibility
• Drag and Drop (bad, will need a rework but okay for now)

--

• I read and understood the contributing guide as well as the code of conduct
• The issues this PR addresses are related to each other
• My changes generate no new warnings
• My code builds and runs on my machine
• My changes are all related to the related issue above
• I documented my code

Screenshots

// TODO

[thecoolwinter]

@matthijseikelenboom I tend to add internal for myself for extra verbosity when designing an API. I've removed them since they're unnecessary.

[thecoolwinter]

This is finally ready for some review!

[matthijseikelenboom]

Only comment I would have is that it'd be nice to have more tests, but that's all

[0xWDG]

Looks good, great work!

I have 2 notes.

1. see requested change, this header filename isn't right.

2. there is no consistency in the header docs
   In some files CodeEditTextView is in the header docs, in others it isn't, this is not breaking but looks a bit weird to me.

 //
 //  FILENAME.swift
 //  
 //
 //  Created by Khan Winter on 11/14/23.
 //

And in others

 //
 //  FILENAME.swift
 //  CodeEditTextView
 //
 //  Created by Khan Winter on 11/14/23.
 //

Committed change