[Epic] Use the full DMMF

[matthewmueller]

Goal

We're able to fully use the DMMF in Go by wrapping or transforming the current DMMF.

This will potentially allow us to propose meaningful changes to the DMMF structure for future clients or provide a technique for better working with the DMMF.

Tasks

• [x] #501
• [x] #522
• [x] #523

Build the new client:

• [x] #509
• [x] #510
• [x] #534
• [x] #531
• [x] #537
• [x] #550
• [x] #562
• [x] #563
• [x] #549
• [x] #578

Not really worth the effort:

• [ ] #513
  • [x] #532
  • [ ] #533
• [ ] #508
• [ ] #564
• [ ] #514
• [ ] #565
• [ ] #527
• [ ] #515
• [ ] #516
• [ ] #517
• [ ] #518

Make the new client work:

• [x] #519
• [x] #520
• [x] #521

Other:

• [ ] #525