feat: implemented very simple login for testing

src/pages/sign-out.ts

@@ -0,0 +1,7 @@
+import type { APIRoute } from 'astro'
+import { clearAuthCookie } from '../utils/auth'
+
+export const POST: APIRoute = ({ cookies, redirect }) => {
+  clearAuthCookie(cookies)
+  return redirect('/sign-in', 303)
+}