build(deps): 添加smooth-scroll插件、axios封装

src/service/request/config.ts

@@ -0,0 +1,8 @@
+/** 请求超时时间 */
+export const REQUEST_TIMEOUT = 15 * 1000;
+
+/** 请求头的content-type类型 */
+export enum ContentType {
+  json = 'application/json',
+  formUrlEncoded = 'application/x-www-form-urlencoded'
+}