Universal Font Tester - Universal Changelog

v3
- Reworked the in-game help menu with clearer clickable previews.
- Added a width test for narrow, wide, and easily-confused glyphs.
- Added a UI test for buttons, HUD labels, counters, percentages, and timers.
- Expanded the preview coverage for Latin, Greek, Cyrillic, and symbols.
- Refactored the full preview to call each section instead of duplicating text blocks.
- Improved the reload message and refreshed the pack presentation.
- Removed the written book feature after compatibility issues on Java Edition 1.21.1.
- Prepared split release archives for the different Java Edition 1.21.x datapack formats.
