Add push notifications

app/src/main/AndroidManifest.xml

@@ -37,7 +37,21 @@
                 <action android:name="android.intent.action.BOOT_COMPLETED" />
             </intent-filter>
         </receiver>
+
         <receiver android:name=".AlarmBroadcastReceiver" />
+
+        <service
+            android:name=".push.CircolappFirebaseMessagingService"
+            android:exported="false">
+            <intent-filter>
+                <action android:name="com.google.firebase.MESSAGING_EVENT" />
+            </intent-filter>
+        </service>
+
+        <meta-data
+            android:name="com.google.firebase.messaging.default_notification_icon"
+            android:resource="@drawable/ic_notification" />
+
     </application>
 
 </manifest>