style: Enable checking for E ruff rules from pycodestyle, fixing simple issues

[echoix]

This PR enables checking of remaining rules in the E category. It fixes simple issues, E101, E231, E265 and E266.

• mixed-spaces-and-tabs (E101): 8 file headings (in tests) copied the license text with some tab at the beginning, then continued with spaces.
• missing-whitespace (E231): 2 similar instances in the same file didn't have the formatting of the .replace() arguments formatted, as it was inside an f-string.
• no-space-after-block-comment (E265): Ignored file that https://github.com/OSGeo/grass/pull/4550 is solving.
• multiple-leading-hashes-for-block-comment (E266): Ignored file that https://github.com/OSGeo/grass/pull/4550 is solving, fixes the others
  • The commented out lines in the psmap file were commented out since it was introduced in the main repo from the addons repo, 13 years ago. At the time, both pair of lines had the same indentation, before PEP8 only formatted the second lines. https://github.com/OSGeo/grass/blame/a7839eac86a82a4da1b971d198f010a891b07c6b/gui/wxpython/psmap/frame.py#L595-L596