Restructure omni services and add Chatwoot research snapshot

research/chatwoot/app/javascript/widget/helpers/axios.js

@@ -0,0 +1,15 @@
+import axios from 'axios';
+import { APP_BASE_URL } from 'widget/helpers/constants';
+
+export const API = axios.create({
+  baseURL: APP_BASE_URL,
+  withCredentials: false,
+});
+
+export const setHeader = (value, key = 'X-Auth-Token') => {
+  API.defaults.headers.common[key] = value;
+};
+
+export const removeHeader = key => {
+  delete API.defaults.headers.common[key];
+};