Add eslint rule and fix as many issues as possible

frontend/src/pages/api/auth/CheckAuth.ts

@@ -1,14 +1,14 @@
-import SecurityClient from '@app/components/utilities/SecurityClient';
+import SecurityClient from "@app/components/utilities/SecurityClient";
 
 /**
  * This function is used to check if the user is authenticated.
  * To do that, we get their tokens from cookies, and verify if they are good.
  */
 const checkAuth = async () =>
-  SecurityClient.fetchCall('/api/v1/auth/checkAuth', {
-    method: 'POST',
+  SecurityClient.fetchCall("/api/v1/auth/checkAuth", {
+    method: "POST",
     headers: {
-      'Content-Type': 'application/json'
+      "Content-Type": "application/json"
     }
   }).then((res) => res);