Optionally Use System Cursor

[thecoolwinter]

Description

Adds the ability to use the system cursor if available and enabled using a useSystemCursor variable on either TextView or TextSelectionManager.

Related Issues

• closes ✨ macOS Sonoma Cursor #5

Checklist

• 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

Example usage in CodeEditSourceEditor:

Screen.Recording.2024-02-20.at.7.01.25.PM.mov

[thecoolwinter]

This is nearly done. Right now the only issue is when scrolling the view flickers as its frame is updated. It's also missing a few features that are described by Apple to implement for the system cursor.

[austincondiff]

Looks good! In the future we may want to make the insertion point color configurable (accent color, text color, or custom).