Add UI option to show local-only toots in public timeline

app/javascript/flavours/glitch/actions/compose.js

@@ -193,7 +193,9 @@ export function submitCompose(routerHistory) {
 
       if (response.data.in_reply_to_id === null && response.data.visibility === 'public') {
         insertIfOnline('community');
-        insertIfOnline('public');
+        if (!response.data.local_only) {
+          insertIfOnline('public');
+        }
       } else if (response.data.visibility === 'direct') {
         insertIfOnline('direct');
       }