Start rewriting of login request in separate file using async/await.

src/components/AuthUser/SignInForm/postCredentials.ts

+import axios from 'axios';
+import { CredentialsType } from './CredentialsType';
+
+export const fetchCookie = async (
+  values: CredentialsType,
+  cookie: React.Dispatch<React.SetStateAction<string>>,
+): Promise<unknown> => {
+  const response = await axios.post(
+    '/api/web/login',
+    {
+      username: values.username,
+      password: values.password,
+      csrfmiddlewaretoken: cookie,
+    },
+    {
+      headers: {
+        'Content-Type': 'application/json',
+      },
+    },
+  );
+
+  return null;
+};