* Initial port of the text tool to Godot 4
* Change font (WIP)
* Add antialiasing option and remove some old unneeded lines
* Remove outline code
* Add horizontal alignment and update the text edit font size
* Improve the text edit
* Don't activate tools while typing
* Format
* Give input priority to the text edit so the key X and shortcuts such as control-z work in the text edit
* Add style settings for bold and italic
* Fix text going blank when changing font
* Use `font.draw_multiline_string()`
* Change the move behavior of the text tool, add confirm and cancel buttons
* Compress images on undo/redo
* Fix text position
* Add support for InputEventMouseMotion.pen_inverted
This commit adds support for stylus erasers, both for drawing and
choosing tools. This may be supported on some styli by inverting them
as the property name suggests, or by holding a button while drawing with
the nib.
* Formatting fixes
