feat: notification center (#1612)

Co-authored-by: Pranav <pranav@chatwoot.com>

app/javascript/dashboard/store/modules/notifications/index.js

@@ -0,0 +1,26 @@
+import { getters } from './getters';
+import { actions } from './actions';
+import { mutations } from './mutations';
+
+const state = {
+  meta: {
+    count: 0,
+    currentPage: 1,
+    unReadCount: 0,
+  },
+  records: {},
+  uiFlags: {
+    isFetching: false,
+    isFetchingItem: false,
+    isUpdating: false,
+    isUpdatingUnreadCount: false,
+  },
+};
+
+export default {
+  namespaced: true,
+  state,
+  getters,
+  actions,
+  mutations,
+};