refactor(pypi): implement PEP508 compliant marker evaluation (#2692)

This implements the PEP508 compliant marker evaluation in starlark and
removes the need for the Python interpreter when evaluating requirements
files passed to `pip.parse`. This makes the evaluation faster and allows
us to fix a few known issues (#2690).

In the future the intent is to move the `METADATA` parsing to pure
starlark so that the `RequiresDist` could be parsed in starlark at the
macro evaluation or analysis phases. This should make it possible to
more easily solve the design problem that more and more things need to
be passed to `whl_library` as args to have a robust dependency parsing:
* #2319 needs the full Python version to have correct cross-platform
compatible `METADATA` parsing and passing it to `Python` and back makes
  it difficult/annoying to implement.
* Parsing the `METADATA` file requires the precise list of target
  platform or the list of available packages in the `requirements.txt`.
  This means that without it we cannot trim the dependency tree in the
  `whl_library`. Doing this at macro loading phase allows us to depend
  on `.bzl` files in the `hub_repository` and more effectively pass
  information.

I can remotely see that this could become useful in `py_wheel` or an
building
wheels from sdists as the environment markers may be present in various
source
metadata as well. What is more `uv.lock` file has the env markers as
part of
the lock file information, so this might be useful there.

Work towards #2423
Work towards #260
Split from #2629