More notifications in participants table

.github/copilot-instructions.md

@@ -11,6 +11,10 @@ Basics: These you need to really follow!
   - server: $locals.supabase
 - Avoid unnceessary iterations. Once the problem is solved, ask me if i want to to continue and only then continue iterating.
 - Avoid sweeping changes throught the project. If you want to change something globally, ask me first.
+- to add a notification, use the toast component
+  - example: toast.success, toast.info, toast.warning, toast.error
+  
+
 
 Do not fall back to the legacy $: label syntax or Svelte 3/4 stores! This is important!