feat: add credentials authentication (#1)

apps/nextjs/src/app/page.tsx

@@ -1,7 +1,10 @@
-import { db } from "@alparr/db";
 import { Button, Stack, Title } from "@mantine/core";
 
+import { auth } from "@alparr/auth";
+import { db } from "@alparr/db";
+
 export default async function HomePage() {
+  const currentSession = await auth();
   const users = await db.query.users.findMany();
 
   return (
@@ -9,6 +12,11 @@ export default async function HomePage() {
       <Title>Home</Title>
       <Button>Test</Button>
       <pre>{JSON.stringify(users)}</pre>
+      {currentSession && (
+        <span>
+          Currently logged in as <b>{currentSession.user.name}</b>
+        </span>
+      )}
     </Stack>
   );
 }