add only notify mentions subtitle in conversation creen

Session/Conversations/Views & Modals/ConversationTitleView.swift

@@ -86,12 +86,21 @@ final class ConversationTitleView : UIView {
     }
 
     private func getSubtitle() -> NSAttributedString? {
-        if thread.isMuted {
         let result = NSMutableAttributedString()
+        if thread.isMuted {
             result.append(NSAttributedString(string: "\u{e067}  ", attributes: [ .font : UIFont.ows_elegantIconsFont(10), .foregroundColor : Colors.text ]))
             result.append(NSAttributedString(string: "Muted"))
             return result
         } else if let thread = self.thread as? TSGroupThread {
+            if thread.isOnlyNotifyMentions {
+                let imageAttachment = NSTextAttachment()
+                imageAttachment.image = UIImage(named: "NotifyMentions.png")?.asTintedImage(color: Colors.text)
+                imageAttachment.bounds = CGRect(x: 0, y: -2, width: Values.smallFontSize, height: Values.smallFontSize)
+                let imageString = NSAttributedString(attachment: imageAttachment)
+                result.append(imageString)
+                result.append(NSAttributedString(string: "  Only Notify Mentions"))
+                return result
+            } else {
                 var userCount: UInt64?
                 switch thread.groupModel.groupType {
                 case .closedGroup: userCount = UInt64(thread.groupModel.groupMemberIds.count)
@@ -104,6 +113,7 @@ final class ConversationTitleView : UIView {
                     return NSAttributedString(string: "\(userCount) members")
                 }
             }
+        }
         return nil
     }