Show loading indicator while translating status

Tusker/Views/Status/ConversationMainStatusCollectionViewCell.swift

@@ -546,7 +546,15 @@ class ConversationMainStatusCollectionViewCell: UICollectionViewListCell, Status
     }
     
     @objc private func translatePressed() {
-        translateStatus?()
+        guard let translateButton,
+              let translateStatus else {
+            return
+        }
+        var config = translateButton.configuration!
+        config.showsActivityIndicator = true
+        translateButton.configuration = config
+        // activity indicator will be hidden when translation finishes and the cell is reconfigured
+        translateStatus()
     }
     
 }