feat: add delay config via interceptor

Author: naman-contentstack

lib/core/contentstackHTTPClient.js

@@ -109,7 +109,12 @@ export default function contentstackHttpClient (options) {
   const instance = axios.create(axiosOptions)
   instance.httpClientParams = options
   instance.concurrencyQueue = new ConcurrencyQueue({ axios: instance, config })
-  instance.interceptors.request.use((request) => {
+  instance.interceptors.request.use(async (request) => {
+    // Add configurable delay before making the request if specified
+    if (config?.delayMs > 0) {
+      await new Promise(resolve => setTimeout(resolve, config.delayMs))
+    }
+    
     if (request.versioningStrategy && request.versioningStrategy === 'path') {
       request.baseURL = request.baseURL.replace('{api-version}', version)
     } else {

types/contentstackClient.d.ts

@@ -45,6 +45,7 @@ export interface ContentstackConfig extends AxiosRequestConfig, ContentstackToke
     logHandler?: (level: string, data: any) => void
     application?: string
     integration?: string
+    delayMs?: number 
 }
 
 export interface LoginDetails {