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>

.local/bin/openrgb-launcher.sh

@@ -0,0 +1,9 @@
+#!/bin/bash
+# Focuses the existing OpenRGB GUI window if one is already open,
+# otherwise starts a new GUI (which connects to the headless
+# autostart server instead of spawning a duplicate server instance).
+if hyprctl clients -j | jq -e '.[] | select(.class == "openrgb")' > /dev/null; then
+    exec hyprctl dispatch focuswindow "class:^(openrgb)$" 2>/dev/null
+else
+    exec /usr/bin/openrgb
+fi