(Added) sync all function.

Added all_labels_except for choosing many labels.
Added fzf function for using all_labels_except.

tui_rsync/models/models.py

@@ -80,3 +80,7 @@ def create_tables():
 def all_labels():
     with db:
         return Source.select(Source.label)
+
+def all_labels_except(labels):
+    with db:
+        return Source.select(Source.label).where(Source.label.not_in(labels))