messages: Add condition for moved label

instead of EDITED label now urwid.Text takes label_text as argument which can
be "EDITED" and "MOVED".

Author: Subhasish-Behera

zulipterminal/ui_tools/messages.py

@@ -723,14 +723,20 @@ def main_view(self) -> List[Any]:
         if self.message["id"] in self.model.index["edited_messages"]:
             edited_label_size = 7
             left_padding = 1
+            label_text = "EDITED"
+        elif self.message["id"] in self.model.index["moved_messages"]:
+            edited_label_size = 6
+            left_padding = 2
+            label_text = "MOVED"
         else:
             edited_label_size = 0
             left_padding = 8
+            label_text = "EDITED"
 
         wrapped_content = urwid.Padding(
             urwid.Columns(
                 [
-                    (edited_label_size, urwid.Text("EDITED")),
+                    (edited_label_size, urwid.Text(label_text)),
                     urwid.LineBox(
                         urwid.Columns(
                             [