Android: Create toggle for enabling/disabling time tracking

Source/Android/app/src/main/res/values/strings.xml

@@ -153,6 +153,8 @@
     <string name="panic_handlers_description">Show a message box when a potentially serious error has occurred. Disabling this may avoid annoying and non-fatal messages, but it may result in major crashes having no explanation at all.</string>
     <string name="osd_messages">Show On-Screen Display Messages</string>
     <string name="osd_messages_description">Display messages over the emulation screen area. These messages include memory card writes, video backend and CPU information, and JIT cache clearing.</string>
+    <string name="time_tracking">Enable Play Time Tracking</string>
+    <string name="time_tracking_description">Tracks the time you spend playing games and shows it in the game details.</string>
     <string name="download_game_covers">Download Game Covers from GameTDB.com</string>
     <string name="show_titles_in_game_list">Show Titles</string>
     <string name="change_theme">Change App Theme</string>