use isDM from the SDK to determine if a spaceRoom, a joinedRoom or a notificationItem are from a dm room.

ElementX/Sources/Services/Room/RoomInfoProxyProtocol.swift

@@ -36,6 +36,7 @@ protocol RoomInfoProxyProtocol: BaseRoomInfoProxyProtocol {
 
     var isEncrypted: Bool { get }
     var isDirect: Bool { get }
+    var isDM: Bool { get }
     var isSpace: Bool { get }
     var isFavourite: Bool { get }