chore: re-arrange stuff

packages/lib/next-auth/kysely-db/db.ts

@@ -0,0 +1,14 @@
+import { KyselyAuth } from '@auth/kysely-adapter';
+import type { Codegen } from '@auth/kysely-adapter';
+import { PostgresDialect } from 'kysely';
+import { Pool } from 'pg';
+
+import type { DB } from '@documenso/prisma/generated/types';
+
+export const db = new KyselyAuth<DB, Codegen>({
+  dialect: new PostgresDialect({
+    pool: new Pool({
+      connectionString: process.env.DATABASE_URL,
+    }),
+  }),
+});