Support for auth() in @default attribute

[Azzerty23]

Hi, I'm trying to implement this feature: #310

It was an excellent opportunity to get hands-on experience with the codebase.

I believe I managed to get something working. But when I run the last 2 tests of auth.test.ts in isolation, they pass. However, if I run all the tests in the file, they do not. Could you help me figure out what I missed, @ymc9, @jiashengguo, please?

Also, I did not succeed in having the @default(auth()) comments in the generated Prisma schema (I simply omitted them).

Here is the approach I followed:

• Retrieving and inserting values from the user context in the new withDefaultAuth() proxy. I did not fetch user data from the Prisma client. Is it worth a separated proxy?
• I worked around the existing @default attribute. While creating a new one might have been simpler, I believe this aligns more naturally in a API design perspective.
• Omitted the generation of @default(auth()) in the Prisma schema, as it is not Prisma compatible.
• I am considering adding validation for the fields in the provided context (like in withPolicy proxy).

I'd appreciate going further after a quick review to ensure I'm heading in the right direction :)

[ymc9]

Hi @Azzerty23 , you are amazing! Thanks for working on this feature. I've been dreaming of having it for quite a while and was thinking about it yesterday 😄. It'll definitely make the code of all ZenStack users cleaner.

I've skimmed through the change, and the structure looks brilliant. You must have spent quite some time to figure things out , as many pieces of code are not yet thoroughly documented. Really appreciate it!

I'm not sure what happened with the test cases. Let me debug and figure out why. I'll also do a thorough review pass and attach my comments.

[Azzerty23]

Thank you so much @ymc9! I must say I'm learning a lot from you :) Let me reply to your comments.