feat(examples): add `with-nestjs` example (#8162)
### Description
Related issue: #8131
I recently created an issue where I explained why it's useful to use
`Nestjs` with `Turborepo`.
This PR adds a new example integration with `nestjs`!
I recorded a short video showing how it's working:
https://github.com/vercel/turbo/assets/44310540/8261e72d-6586-4a27-ae6e-e1ab943d2c3a
### Testing Instructions
This new example is located at `./examples/with-nestjs/`.
It uses a basic `turborepo nextjs` for `apps/web` and a customized
`nestjs` app located at `apps/api`.
To launch all the apps and packages in dev mode, run `pnpm run dev`.
The `apps/api` server includes a basic resource (CRUD) example where the
`apps/web` use the `apps/api` `links.findAll` API methods to retrieve
the displayed links.
They use the same package `@repo/api` to retrieve the shared `entity`
and `dto`s.
Even if the `@repo/api` mainly uses the `nestjs` configuration, it can
be used for Nextjs and/or any other kind of apps.
For more information, I documented it in the `root/README`
> That's it for now. I tried not to put too many things in this example
and follow the flow of other examples...
> Please let me know if I missed anything. I'll be glad to have your
feedback.
>
> cc: @anthonyshew
Will close #8131
---------
Co-authored-by: Anthony Shew <anthony.shew@vercel.com>
Co-authored-by: Anthony Shew <35677084+anthonyshew@users.noreply.github.com>
