Try out basedpyright with baseline file

[aabmass]

Enables typechecking on python packages, examples, tests in the repo using basedpyright's baseline feature https://docs.basedpyright.com/latest/benefits-over-pyright/baseline/

Downsides to this approach:

• VSCode's default python settings doesn't recognize this file and will complain about tons of errors. You can recommend basedpyright LSP instead https://docs.basedpyright.com/latest/installation/ides/#vscode-vscodium
• The .basedpyright/baseline.json is pretty enormous
• Typechecking becomes much slower (more files). Takes 28 seconds on my machine.

Benefit:

• All new code even in existing files will be forced to type check
• Don't litter codebase with # type: ignore

[aabmass]

I imagine many errors could be removed by adding all new instrumentations here too.

[github-actions]

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