improvements(adapters): `prisma.schema` is used to define the seed client aliases

[jgoux]

Fixes S-2090 and S-2028

In this PR:

• I reworked the projectConfig part which was copy-pasted from our other repo. It's now more aligned with how we handle the other configs.
• I moved the logic for patching the userModels from DatabaseClient to Adapter, it shouldn't be a concern of our database abstraction.
• I added the ability to patch the seedConfig for a particular adapter. I used this ability to parse the prisma.schema and reflect prisma's model and field names into our seedConfig.alias.override config.

[linear[bot]]

S-2090 Analyse the `schema.prisma` and use it to configure seedConfig.alias

[image.png](https://uploads.linear.app/829dfb09-cf0d-4576-95be-cdb6a6e066dd/86cc86b5-8498-48d3-add1-c4f2fe32cbf3/835b72b7-063b-4e2e-8f06-50ff203343e4)

S-2028 Rework config/projectConfig

It was ported 1:1 from the old repo and there is a lot of needless logic in it.