Implement file provider capabilities

The previously used file sharing api was restricted after Android N causing the engine to crash whenever used on devices running Android N or higher.

platform/android/java/lib/AndroidManifest.xml

@@ -20,6 +20,16 @@
             android:exported="false"
             />
 
+        <provider
+            android:name="androidx.core.content.FileProvider"
+            android:authorities="${applicationId}.fileprovider"
+            android:exported="false"
+            android:grantUriPermissions="true">
+            <meta-data
+                android:name="android.support.FILE_PROVIDER_PATHS"
+                android:resource="@xml/godot_provider_paths" />
+        </provider>
+
     </application>
 
 </manifest>