Replace more with share button for timeline status swipe actions

Tusker/Views/Status/TimelineStatusTableViewCell.swift

@@ -257,11 +257,25 @@ extension TimelineStatusTableViewCell: TableViewSwipeActionProvider {
         }
         reply.image = UIImage(systemName: "arrowshape.turn.up.left.fill")
         reply.backgroundColor = tintColor
-        let more = UIContextualAction(style: .normal, title: "More") { (action, view, completion) in
+        
+        let moreTitle: String
+        let moreImage: UIImage
+        // on iOS 14+, more actions are in the context menu so display this as 'Share'
+        if #available(iOS 14.0, *) {
+            moreTitle = "Share"
+            // Bold to more closely match the other action symbols
+            let config = UIImage.SymbolConfiguration(weight: .bold)
+            moreImage = UIImage(systemName: "square.and.arrow.up")!.applyingSymbolConfiguration(config)!
+        } else {
+            moreTitle = "More"
+            moreImage = UIImage(systemName: "ellipsis.circle.fill")!
+        }
+        
+        let more = UIContextualAction(style: .normal, title: moreTitle) { (action, view, completion) in
             completion(true)
             self.delegate?.showMoreOptions(forStatus: self.statusID, sourceView: self)
         }
-        more.image = UIImage(systemName: "ellipsis.circle.fill")
+        more.image = moreImage
         more.backgroundColor = .lightGray
         return UISwipeActionsConfiguration(actions: [reply, more])
     }