Show some generic message for ACL changes

fixes #1476

resources/qml/delegates/MessageDelegate.qml

@@ -282,6 +282,20 @@ Item {
 
         }
 
+        DelegateChoice {
+            roleValue: MtxEvent.ServerAcl
+
+            NoticeMessage {
+                body: formatted
+                isOnlyEmoji: false
+                isReply: d.isReply
+                keepFullText: d.keepFullText
+                isStateEvent: d.isStateEvent
+                formatted: qsTr("%1 changed which servers are allowed in this room.").arg(d.userName)
+            }
+
+        }
+
         DelegateChoice {
             roleValue: MtxEvent.Name
 

src/timeline/TimelineModel.cpp

@@ -216,6 +216,8 @@ qml_mtx_events::toRoomEventType(mtx::events::EventType e)
         return qml_mtx_events::EventType::Topic;
     case EventType::RoomTombstone:
         return qml_mtx_events::EventType::Tombstone;
+    case EventType::RoomServerAcl:
+        return qml_mtx_events::EventType::ServerAcl;
     case EventType::RoomRedaction:
         return qml_mtx_events::EventType::Redaction;
     case EventType::RoomPinnedEvents:
@@ -334,6 +336,9 @@ qml_mtx_events::fromRoomEventType(qml_mtx_events::EventType t)
     /// m.room.tombstone
     case qml_mtx_events::Tombstone:
         return mtx::events::EventType::RoomTombstone;
+    /// m.room.server_acl
+    case qml_mtx_events::ServerAcl:
+        return mtx::events::EventType::RoomServerAcl;
     /// m.room.topic
     case qml_mtx_events::Topic:
         return mtx::events::EventType::RoomTopic;

src/timeline/TimelineModel.h

@@ -85,6 +85,8 @@ enum EventType
     PowerLevels,
     /// m.room.tombstone
     Tombstone,
+    /// m.room.server_acl
+    ServerAcl,
     /// m.room.topic
     Topic,
     /// m.room.redaction