Add modern linter settings.
Review Request #15120 — Created June 12, 2026 and updated — Latest diff uploaded
This change adds the linter settings I think we should have, including
configurations forbasedpyright,ruff, andtypos. We have a lot of
code that currently gets flagged for things in here, but I think this is
a good default for code moving forward.
I've been using these settings for many months.