[FEATURE]: Support the Batch API on the Neon adapter

### Describe what you want

In `@neondatabase/serverless` handle transactions like this

```ts
import { neon } from '@neondatabase/serverless';
const sql = neon(process.env.DATABASE_URL);
const showLatestN = 10;

const [posts, tags] = await sql.transaction([
sql`SELECT * FROM posts ORDER BY posted_at DESC LIMIT ${showLatestN}`,
sql`SELECT * FROM tags`,
]);
```

Currently, Drizzle does not support transactions on neon adapters. However, if Drizzle supports `batch` on neon, it can bridge this gap.