Update Python Package Build Tools to notate which tools support pylock

[ucodery]

There is now a universal python lock file specification
pylock.toml
PEP-751

This standard is very new at the time of writing, accepted March 2025, but is being adopted by the community at a very fast rate. It might be worthwhile to wait for the PR churn and release cycles across different projects to die down before doing this update.

[lwasser]

We could create a milestone that encompasses all the updates we want to make in the upcoming months. If you think we should wait on this one, it could become part of a new milestone.

[lwasser]

heya @ucodery is this something that is stable enough to add now to the build backend table? i'm debating as to whether it belongs on our help-wanted board or not.