feat: suppport for NX monorepos

[FinnDore]

What does this PR address?

Out of the box support for NX mono repos. ( nexjs apps, express apps and apps that build to an index.js )

• [X] Make sure to follow GitHub's guide on creating PR.
• [x] Did you read through contribution guidelines?
• [x] Did your changes require updates to the documentation? Have you updated those accordingly? - New env var so yes?
• [x] Did you write tests to cover your changes? Did it pass locally when running cargo test?
• [x] Have you run cargo fmt, cargo check and cargo clippy locally to ensure that CI passes?

[FinnDore]

Think this is ready for a review whenever someone is free 😊

[JakeCooper]

As a result of this provider, can we revert #382?

The reason we added it was for the nwl stuff

[FinnDore]

Tbh I have never needed this env var on Railway. Having said that @ChristianIvicevic said not having it causes a sigTerm? I have noticed a sig term on vercel before when using nx but it's very flakey and may be caused by me not setting this env var.

[ChristianIvicevic]

CI=true makes a lot of sense with Node projects such as disabling watch modes for tools (such as tests) or in the case of Nx disabling the background daemon that caused SIGTERMs.

[coffee-cup]

As a result of this provider, can we revert #382?

The reason we added it was for the nwl stuff

This PR does not change the fact that CI=true is needed. It just adds better first class support for NX apps.

[FinnDore]

Think all the ducks are in order now. This should be ready for a re-review whenever you are free next week or so 😀.

[FinnDore]

Done!

[FinnDore]

Odd, somehow I missed some. I'll get on that asap tomorrow.

[coffee-cup]

I just went ahead and fixed the remaining lint errors (Literally just had to run cargo clippy --fix) 😄