(Added) better label prompt for choosing labels.

tui_rsync/cli/groups/groups.py

@@ -47,16 +47,6 @@ def add(
         question = "Would you like to change [yellow b]the group label[/]?"
         group_label = LabelPrompt.ask_uuid(question)
 
-    labels = []
-    while True:
-        is_empty = count_all_labels_except(labels) == 0
-        if is_empty:
-            break
-        is_fzf = Confirm.ask("Would you like to add a source to the group? ",
-                             default=True)
-        if not is_fzf:
-            break
-        option = LabelPrompt.get_label_except_fzf(labels)
-        labels.append(option)
+    labels = LabelPrompt.get_labels()
     Group.create_save(group_label, labels)