[FEATURE]: `drizzle-zod` with a join syntax

### Feature hasn't been suggested before.

- [X] I have verified this feature I'm about to request hasn't been suggested before.

### Describe the enhancement you want to request

Not every request in a backend server is a simple database read. Some involve complex operations like joins.

```ts
const users = pgTable('users', {
id: t.serial().primaryKey(),
name: t.string()
});

const posts = pgTable('posts', {
id: t.serial().primaryKey(),
user: t.string().references(() => users.id);
content: t.string()
});

const userPosts = createSelectSchema(users, { ...joinedWith(posts) });
```

The above snippet is only an example. Such a feature would be great to use!