feat: notification center (#1612)

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

app/javascript/dashboard/api/notifications.js

@@ -0,0 +1,33 @@
+/* global axios */
+import ApiClient from './ApiClient';
+
+class NotificationsAPI extends ApiClient {
+  constructor() {
+    super('notifications', { accountScoped: true });
+  }
+
+  get(page) {
+    return axios.get(`${this.url}?page=${page}`);
+  }
+
+  getNotifications(contactId) {
+    return axios.get(`${this.url}/${contactId}/notifications`);
+  }
+
+  getUnreadCount() {
+    return axios.get(`${this.url}/unread_count`);
+  }
+
+  read(primaryActorType, primaryActorId) {
+    return axios.post(`${this.url}/read_all`, {
+      primary_actor_type: primaryActorType,
+      primary_actor_id: primaryActorId,
+    });
+  }
+
+  readAll() {
+    return axios.post(`${this.url}/read_all`);
+  }
+}
+
+export default new NotificationsAPI();