Next release planning

[henryiii]

No promises here, but this my personal wishlist for the next release:

Related series of ideas:

• Support session dependencies (requires) #631 - this is the key building block for making one thing depend on other things
• Add ability for many nox tasks to reuse the same session/virtual env #167 - allow @nox.env and then defining sessions for it. Would probably solve a lot of things at once, like custom venv locations and lock file support.
• Add a "build" job and way to share wheels - could be just an example using the above one or two items.

Add some helpers to the nox.project namespace for common tasks that have PEPs behind them:

• feat: helper to get dependency-groups #876
• feat: add helper to get the Python listing #877 (followup fix: warning about __main__ already being imported #884)

PEP 723 runner:

• feat: expose main as nox.main #878 - Easier runs via PEP 723
• feat: support PEP 723 noxfiles #881 - This would also users to share code, and even not have to install nox. Also extend using Python packages, like using click or rich inside a session.

Fixes:

• fix: support noxfile being a symlink #829
• fix: error with helpful message if invalid option is set via nox.options #871
• fix: error if invalid reuse_venv set #872
• fix: outer_env issues fixed #874
• pypy-3.10 doesn't work as an interpreter name #861
• Verify 3.13t works well

Cleanup (with fixes):

• chore: limit the visible items for tab completion #889
• chore: more typing and test improvements #890
• chore: add more Ruff checks and fixes #893
• tests: statically type tests #894

Longer term, I have ideas about the CLI that might make sense after #167.