PAINTROID-759 Implement Text Tool

[Amit-Matth]

This pull request introduces the new Text Tool and a completely revamped BoundingBox for easier and more powerful object editing. It also cleans up how shapes are handled.

PAINTROID-759

New Features and Enhancements

• Added Text Tool: You can now add text to your drawings! The text can be moved, resized, and rotated using a new, more advanced bounding box.
• Add comprehensive and reasonable tests for the Text Tool functionality.
• Made the Bounding Box Smarter: The box that appears around shapes and text is now much better. It has new handles for easier rotation and for stretching edges, and it draws itself more clearly.

Refactorings and Bug Fixes

• Modify the Bounding Box Code: The way the selection box (BoundingBox) works behind the scenes has been completely updated to support the new features and make it more reliable.
• Simplified the Shapes Tool: The tool for drawing shapes now uses the new, smarter BoundingBox, making it simpler and more consistent with the Text Tool.
• Cleaned up Shape Options: Removed the separate "rotate mode" button and rotate parameter for shapes because the new BoundingBox handles rotation more directly.
• Updated Related Tests: Made sure all the tests for the BoundingBox are up-to-date with these big changes and that everything works as expected.

Checklist

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