PDFCLOUD-5416 Use basedpyright

[datalogics-kam]

Use basedpyright, it's the easiest to use type checker at the moment. It also allows us to up some strictness, and baseline known warnings to clean up later.

• Remove mypy; it's annoying to have more than one type checker.
• basedpyright has some advantages over pyright in terms of installation and operation.

See: https://docs.basedpyright.com/v1.31.4/
Integrate basedpyright with your IDE: https://docs.basedpyright.com/v1.31.4/installation/ides/

[datalogics-cgreen]

I successfully installed basedpyright and observed it run with pre-commit.

There were no errors, but several warnings:

basedpyright.............................................................Failed
- hook id: basedpyright
- exit code: 1

<my-path>noxfile.py
  <my-path>/noxfile.py:14:5 - warning: Result of call expression is of type "Action" and is not used; assign to variable "_" if this is intentional (reportUnusedCallResult)
  <my-path>/noxfile.py:15:5 - warning: Result of call expression is of type "Action" and is not used; assign to variable "_" if this is intentional (reportUnusedCallResult)
  <my-path>/noxfile.py:30:5 - warning: Result of call expression is of type "Any | None" and is not used; assign to variable "_" if this is intentional (reportUnusedCallResult)
  <my-path>/noxfile.py:39:5 - warning: Result of call expression is of type "Any | None" and is not used; assign to variable "_" if this is intentional (reportUnusedCallResult)
0 errors, 4 warnings, 0 notes

none of which I regard as red flags, but it would be nice to knock 'em out if possible, while basedpyright is in the spotlight here.

[datalogics-kam]

noxfile.py wasn't in the list of included files for pyright, but since pre-commit does each file by name, basedpyright obeys and looks at the file.

I added noxfile.py to the include list and fixed the issues.

(pre-commit isn't recommended for pyright, you'll notice it doesn't run basedpyright in pre-commit in CI, it has its own job. The recommendation is to install it in your IDE, and have the IDE warn you and CI as a backup, but since it's new, I'm helping do a transition)