Use prisma generated type for model argument

[darr1s]

Description

Hello again, I am suggesting that we use the interface exported by @prisma/client on built to pass into model: during constructor.

Motivation and Context

1. Better type-safety
2. Potentially allowing Swagger doc to show possible field

Examples

Instead of

@Injectable()
export class WebhookService extends PrismaCrudService {
  constructor() {
    super({
      model: 'webhook',
      allowedJoins: ['tenant', 'file'],
      defaultJoins: [],
    })
  }
}

We do

import { Webhook } from '@prisma/client'

@Injectable()
export class WebhookService extends PrismaCrudService {
  constructor() {
    super({
      model: Webhook,
      allowedJoins: ['tenant', 'file'], // e.g. Error will be thrown when a wrong field is passed in
      defaultJoins: [],
    })
  }
}

Reference

I've seen this being done in https://github.com/chax-at/prisma-filter that its @DirectFilterPipe will recognize the field types in the whitelist array.

[kepelrs]

One thing I'm wondering is allowedJoins accepts dot notated deep joins (eg. allowedJoins: ['tenant.users.comments', 'file']). Would be nice if that could be type safe as well.

Not sure when I'll have bandwidth for this, but I like the direction. PR's are also welcome if you feel like it :)