[docs] Add install from PyPI to docs

[ckadner]

Update the install docs to include install from PyPI

https://vllm-spyre--327.org.readthedocs.build/en/327/getting_started/installation.html#install-vllm-with-the-vllm-spyre-plugin

[github-actions]

👋 Hi! Thank you for contributing to vLLM support on Spyre.
Just a reminder: Make sure that your code passes all the linting checks, otherwise your PR won't be able to be merged. To do so, first install the linting requirements, then run format.sh and commit the changes. This can be done with uv directly:

uv sync --frozen --group lint --active --inexact

Or this can be done with pip:

uv pip compile --group lint > requirements-lint.txt
pip install -r requirements-lint.txt
bash format.sh

Now you are good to go 🚀

[ckadner]

@joerunde @rafvasq -- should be good to review now 🙏🏻

Rendered changes: https://vllm-spyre--327.org.readthedocs.build/en/327/getting_started/installation.html

Thank you!

[ckadner]

tools/lint_docs.sh runs both scan and fix -- but during a CI run, changing files to fix lint errors is not needed

[joerunde]

Sorry I got distracted after my first comment earlier- This is looking really good!

[joerunde]

lgtm!

Looks like maybe we've broken something about the test jobs, they're showing up as expected but not running :(

Are they supposed to run but skip all execution when there are only docs changes so the checks pass?

[rafvasq]

Mostly nits around using admonitions to highlight certain notes and some typos -- but nothing worth blocking a merge :)

[ckadner]

Looks like maybe we've broken something about the test jobs, they're showing up as expected but not running :(

Are they supposed to run but skip all execution when there are only docs changes so the checks pass?

Because I touched pyproject.toml, all tests and docker build ran fully (not just the fake quick run) -- with each of my tiny commits -- so I cancelled them to not waste resources. I will make updates to address Rafael's review comments which will trigger a new run of tests and docker build.

[ckadner]

Mostly nits around using admonitions to highlight certain notes and some typos -- but nothing worth blocking a merge :)

Weird, the admonitions do not get rendered in the preview? @rafvasq ?
https://vllm-spyre--327.org.readthedocs.build/en/327/getting_started/installation.html

e.g.:

... and expanded:

[rafvasq]

@ckadner 🤔 Not sure what you mean since I see them there in the preview and your screenshot?

[ckadner]

Oh oh, this one auto-merged before @rafvasq could re-review since @joerunde had approved it already earlier but the PR hung around due to the missing required test runs. With the latest commit it triggered the tests again and all checks completed. I should have disabled auto-merge prior to pushing my review updates 😢

[ckadner]

@ckadner 🤔 Not sure what you mean since I see them there in the preview and your screenshot?

Yeah, must have been a glitch. I see it now as well. Also, live now since it merged. Thank you for your review @rafvasq. It looks much more polished now 😊