[FEATURE]: drizzle seed should support custom datatypes

### 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

`drizzle-seed` should support seeding columns with custom dataypes - in my case, i have a `bytea` custom datatype (because postgres `bytea` is not yet natively supported by drizzle).

i had expected that i could just provide a custom refinement function for that column, like this:

```ts
await seed(db, schema).refine(() => {
return {
usersTable: {
columns: {
recoveryCode() {
return Buffer.from(encryptString(generateRandomRecoveryCode()));
},
},
},
};
});
```

but that still throws with "Error: column with type bytea is not supported for now."