Rename the Android app to Photog

android/app/src/main/res/values/strings.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
 <resources>
-    <string name="app_name">Gallery Upload</string>
+    <string name="app_name">Photog</string>
     <string name="upload_channel_name">Uploads</string>
 </resources>