feat: WebSocket based implementation of server sent events for cache busting (#527)

* rough implementation of WS based event system for server side notifications of mutation

* fix test construction

* fix deadlock on event bus

* disable linter error

* add item mutation events

* remove old event bus code

* refactor event system to use composables

* refresh items table when new item is added

* fix create form errors

* cleanup unnecessary calls

* fix importer erorrs + limit fn calls on import

Former-commit-id: 2cbcc8bb1d

frontend/components/Form/Password.vue

@@ -15,7 +15,7 @@
 <script setup lang="ts">
   type Props = {
     modelValue: string;
-    placeholder: string;
+    placeholder?: string;
     label: string;
   };