manifest: declare support for flash

Change-Id: I04498d8639b44774b4ab92ed49806e45d2a2ac64

jami-android/app/src/main/AndroidManifest.xml

@@ -77,6 +77,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.
     <uses-feature
         android:name="android.hardware.camera.autofocus"
         android:required="false" />
+    <uses-feature
+        android:name="android.hardware.camera.flash"
+        android:required="false" />
     <uses-feature
         android:name="android.hardware.touchscreen"
         android:required="false" />