chore: RTL support for keyboard commands and pointer events

[pan-kot]

Description

Support for RTL

Observations:

• Settings button dropdown opens to the left when direction="rtl";
• Pressing arrow left when the palette is open causes screen to grow;
• Need to invert the resize icon and cursor.

Screen.Recording.2024-05-13.at.15.15.38.mov

How has this been tested?

Review checklist

The following items are to be evaluated by the author(s) and the reviewer(s).

Correctness

• Changes include appropriate documentation updates.
• Changes are backward-compatible if not indicated, see CONTRIBUTING.md.
• Changes do not include unsupported browser features, see CONTRIBUTING.md.
• Changes were manually tested for accessibility, see accessibility guidelines.

Security

• If the code handles URLs: all URLs are validated through the checkSafeUrl function.

Testing

• Changes are covered with new/existing unit tests?
• Changes are covered with new/existing integration tests?

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[codecov]

Codecov Report

Attention: Patch coverage is 93.22917% with 13 lines in your changes are missing coverage. Please review.

Project coverage is 93.60%. Comparing base (ebd3533) to head (6f12236).

Files	Patch %	Lines
src/internal/item-container/index.tsx	77.41%	7 Missing ⚠️
src/board/transition.ts	90.62%	3 Missing ⚠️
src/internal/utils/rects.ts	82.35%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #302      +/-   ##
==========================================
- Coverage   93.61%   93.60%   -0.01%     
==========================================
  Files          62       62              
  Lines        4321     4444     +123     
  Branches      753      767      +14     
==========================================
+ Hits         4045     4160     +115     
- Misses        274      282       +8     
  Partials        2        2              

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[pan-kot]

A better solution should be available here. Maybe it is easier to sort the "sources" differently depending on the page direction.

[pan-kot]

The DOMRect type is used in a bunch of places, it would be nice to replace it with some custom Rect type featuring rtl-friendly property names, maybe as a separate PR.