feat: track OpenRGB single-instance fix and RQuickShare desktop files

Adds a headless OpenRGB autostart entry plus a launcher wrapper that
focuses the existing GUI window instead of spawning a duplicate
instance, and tracks the customized RQuickShare autostart/launcher
desktop entries.

Co-Authored-By: Claude Sonnet 5 <noreply@anthropic.com>

.config/autostart/OpenRGB.desktop

@@ -0,0 +1,9 @@
+[Desktop Entry]
+Categories=Utility;
+Comment=OpenRGB 0.9+ (1.0rc3), for controlling RGB lighting.
+Icon=OpenRGB
+Name=OpenRGB
+StartupNotify=true
+Terminal=false
+Type=Application
+Exec=/usr/bin/openrgb --profile "falcon" --server