Add pnpm lockfiles as generated

[SuperchupuDev]

Description

Currently, npm lockfiles (package-lock.json) are considered generated files. pnpm lockfiles weren't marked as generated, even though they are indeed generated files

Checklist:

• I am adding a new extension to a language.
  • The new extension is used in hundreds of repositories on GitHub.com
    • Search results for each extension:
      • https://github.com/search?type=code&q=NOT+is%3Afork+path%3Apnpm-lock.yaml
  • I have included a real-world usage sample for all extensions added in this PR:
    • Sample source(s):
      • https://github.com/biomejs/biome/blob/2355969cbc1f4e83872410c8f48f9569213ad1c8/pnpm-lock.yaml
    • Sample license(s):
  • I have included a change to the heuristics to distinguish my language from others using the same extension.

[SuperchupuDev]

Let me know if I need to change or add anything, this is my first PR to this repo

[SuperchupuDev]

I see it was decided in #4348 not to mark yarn lockfiles as generated. Would pnpm lockfiles fall under the same boat? If not, why are npm lockfiles marked as generated but not these ones?

[lildude]

I see it was decided in #4348 not to mark yarn lockfiles as generated. Would pnpm lockfiles fall under the same boat?

Possibly. The decision to not mark yarn lockfiles came from community feedback so we will not be going back on this unless requested by the wider community.

If not, why are npm lockfiles marked as generated but not these ones?

No idea. Maybe because package-lock.json was added to Linguist over 7 years ago and maybe pnpm didn't exist waaaay back then.

Let me know if I need to change or add anything, this is my first PR to this repo

Yes, remove the yarn lock related change. You'll also need to add tests and a sample. See #6748 as an example where a file has recently been marked as generated.

[SuperchupuDev]

Yes, remove the yarn lock related change. You'll also need to add tests and a sample. See #6748 as an example where a file has recently been marked as generated.

Done. I tried to find a small sample of a pnpm lockfile but this 9k line one was the smallest I could find for a relevant enough project. I hope that's not much of a problem

[lildude]

I hope that's not much of a problem

It is… hooooge. Please find a smaller one. We don't need a real world file for test fixtures so feel free to write a small representative one by hand if you can't find a smaller one.