feat(frontend): optimize frontend interaction (#8)

Support auto refresh. Change authentication method. Streamline the frontend code.

frontend/src/api/auth.js

@@ -0,0 +1,12 @@
+import request from './index'
+
+export function auth(token) {
+    return request({
+        url: '/auth',
+        method: 'get',
+        headers: {"Token": token},
+        validateStatus: function (status) {
+            return status >= 200 && status < 300
+        }
+    })
+}