feat: add SMS template IDs to dashboard settings

Let SuperAdmin save sms.ir template IDs in the database, creating missing template records on save.

src/api/settingsApi.js

@@ -0,0 +1,7 @@
+// /src/api/settingsApi.js
+import axiosInstance from './axiosInstance';
+
+export const settingsApi = {
+  get: () => axiosInstance.get('/settings'),
+  save: (data) => axiosInstance.put('/settings', data)
+};