- Change 'applist' action to 'list' to match the documentation

- Add 'quit' action to quit the app being streamed
- Check if the device is paired before streaming
- Fix a typo that caused a segfault when streaming

src/xml.h

@@ -16,6 +16,7 @@
  * You should have received a copy of the GNU General Public License
  * along with Moonlight; if not, see <http://www.gnu.org/licenses/>.
  */
+#pragma once
 
 #include <stdio.h>