Don't select the whole table

**Is your feature request related to a problem? Please describe.**
The following query pulls the whole posts table in memory:
`
query{
posts{
id
}
}
`
If there are a large number of posts with large content, this can be an issue.

**Describe the solution you'd like**
Transform the selected graphql fields into prisma select and pass it to the prisma client.

**Additional context**
https://github.com/paljs/prisma-tools/blob/main/packages/plugins/src/select.ts

Start by reading the GraphQL selection handling and Prisma client calls in the resolver or generated CRUD code, then compare the approach in packages/plugins/src/select.ts from the linked paljs/prisma-tools project. Trace the sample posts query and determine how its selected fields reach Prisma. Done means large fields are not loaded when they are absent from the GraphQL selection, with relevant tests covering the behavior.

Written by the indexing model from the issue text.