AutoBuild update 1.2.7+1.21.11

Added a Place Sounds setting to enable or disable block placement sounds

Fixed incorrect "Speed updated" messages when changing non-speed settings during a build

Build speed can now go slower than 1 block per tick

Removed the Featured tab from the main overlay

Improved the bottom-right Support / Discord / YouTube buttons with better styling

Changed the regular library side panel from a preview/layer list to a materials list

Updated library preview text to match click/select behavior

Improved the export menu styling for Pos1 and Pos2

Fixed export coordinate fields so manual values stay saved when reopening the menu

Fixed export coordinate fields so typing coordinates updates the selection live

Fixed Set Pos buttons so they work correctly even after manual coordinate edits