feat: authentication with OAuth

app/middleware/auth.global.ts

@@ -0,0 +1,14 @@
+export default defineNuxtRouteMiddleware((to, _from) => {
+  const { isAuthenticated } = useAuth();
+  const allowedUnauthenticatedPaths: string[] = ['/', '/login'];
+  if (allowedUnauthenticatedPaths.find((p) => p === to.path)) {
+    return;
+  }
+  if (!isAuthenticated.value) {
+    return navigateTo({
+      path: '/login',
+      query: { redirect: to.fullPath },
+    });
+  }
+  return;
+});