Show toast whenever someone raised the hand

Signed-off-by: Marcel Hibbe <dev@mhibbe.de>

app/src/main/java/com/nextcloud/talk/activities/CallActivity.java

@@ -2681,6 +2681,16 @@ public class CallActivity extends CallBaseActivity {
 
         @Override
         public void onRaiseHand(boolean state, long timestamp) {
+            if (state) {
+                CallParticipant participant = callParticipants.get(sessionId);
+                if (participant != null) {
+                    String nick = participant.getCallParticipantModel().getNick();
+                    runOnUiThread(() -> Toast.makeText(
+                        context,
+                        String.format(context.getResources().getString(R.string.nc_call_raised_hand), nick),
+                        Toast.LENGTH_LONG).show());
+                }
+            }
         }
 
         @Override

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

@@ -222,6 +222,7 @@
     <string name="nc_call_button_content_description_answer_voice_only">Answer as voice call only</string>
     <string name="nc_call_button_content_description_answer_video_call">Answer as video call</string>
     <string name="nc_call_button_content_description_switch_to_self_vide">Switch to self video</string>
+    <string name="nc_call_raised_hand">%1$s raised the hand</string>
 
     <!-- Picture in Picture -->
     <string name="nc_pip_microphone_mute">Mute microphone</string>