feat: notification center (#1612)

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

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

@@ -0,0 +1,15 @@
+export const getters = {
+  getNotifications($state) {
+    return Object.values($state.records).sort((n1, n2) => n2.id - n1.id);
+  },
+  getUIFlags($state) {
+    return $state.uiFlags;
+  },
+  getNotification: $state => id => {
+    const notification = $state.records[id];
+    return notification || {};
+  },
+  getMeta: $state => {
+    return $state.meta;
+  },
+};