Allow to turn off aggregate notifications

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

@@ -1486,4 +1486,6 @@
     <string name="set_display_counters_description">Will display a bubble counter in tab timelines for new messages</string>
     <string name="view_the_original_message">Open the original message</string>
     <string name="remember_position">Remember position in timelines</string>
+    <string name="aggregate_notifications">Aggregate notifications</string>
+    <string name="aggregate_notifications_summary">When turning on, the app will collapse related notifications</string>
 </resources>

app/src/main/res/xml/pref_interface.xml

@@ -20,6 +20,14 @@
         app:summary="@string/set_timelines_in_a_list"
         app:title="@string/set_timelines_in_a_list_title" />
 
+
+    <SwitchPreferenceCompat
+        app:defaultValue="true"
+        app:iconSpaceReserved="false"
+        app:key="@string/SET_AGGREGATE_NOTIFICATION"
+        app:singleLineTitle="false"
+        app:summary="@string/aggregate_notifications_summary"
+        app:title="@string/aggregate_notifications" />
     <SwitchPreferenceCompat
         app:defaultValue="true"
         app:iconSpaceReserved="false"