BLD: Codespell for NumPy CI

[ganesh-k13]

Codespell CI

1. Added a new argument to linter.py to run codespell
2. Added the new tool to pipelines

Usage

# We have misspelled processor with processer:
$ python3 tools/linter.py --codespell --uncommitted
7: +take advantage of specialized processer functionality are preferred. Examples
        processer ==> processor
10: +are multithreaded and processer dependent, environmental variables and external
        processer ==> processor
13: +or specify the processer architecture.
        processer ==> processor

-------8<-------
SUMMARY:
processer     3

TODO

• Add runtest.py flags
• Add usage docs

Note:

Adding a tmp commit 92a9826 to test the CI

resolves: #13694
cc: @luzpaz

[bsipocz]

This is now conflicting, so will need a rebase, or a complete restart in a new PR (thus I'm adding the close label, it's for the PR not for the idea).

[ganesh-k13]

I'll close this, for now, let's see if it's worth adding in the future.