feat(macos): Relaunch app to fix tray icon and add Dock icon

This change modifies the macOS app bundle creation script to improve the application's behavior and user experience on macOS.

Previously, when Solaar was launched as a standard `.app` bundle, macOS restrictions sometimes prevented the GTK tray icon from appearing correctly. This change introduces a workaround in the wrapper script. The application now relaunches itself as a detached background process on the first launch. This new, detached process is no longer subject to the same `.app` bundle restrictions, allowing the tray icon to be created reliably.

Additionally, the `LSUIElement` key in the `Info.plist` is set to `false`. This makes Solaar a regular application with an icon in the Dock, which is the standard behavior expected by most macOS users for a graphical application.

tools/create-macos-app.sh

@@ -31,7 +31,20 @@ WRAPPER="${MACOS_DIR}/solaar-wrapper"
 cat > "${WRAPPER}" <<EOF
 #!/usr/bin/env bash
 set -euo pipefail
-exec "${SOLAAR_RESOLVED_PATH}"  "\$@"
+
+# When launched via 'Solaar.app', macOS applies .app bundle restrictions
+# that may prevent GTK from creating a tray icon properly.
+# Workaround: Launch solaar in a detached background process
+
+if [[ "\${SOLAAR_RELAUNCHED:-}" != "1" ]]; then
+    # First invocation from .app bundle - relaunch detached
+    export SOLAAR_RELAUNCHED=1
+    nohup "\$0" "\$@" >/dev/null 2>&1 &
+    exit 0
+fi
+
+# Second invocation - now detached, exec solaar normally
+exec "${SOLAAR_RESOLVED_PATH}" "\$@"
 EOF
 chmod +x "${WRAPPER}"
 
@@ -78,6 +91,8 @@ cat <<EOF
     <string>11.0</string>
     <key>NSInputMonitoringUsageDescription</key>
     <string>Solaar needs to access input devices to configure and monitor your Logitech keyboards, mice, and other peripherals.</string>
+    <key>LSUIElement</key>
+    <false/>
 EOF
 if [[ ${HAVE_ICON} -eq 1 ]]; then
 cat <<'EOF'