standard CI envs dir & naming conventions

[jGaboardi]

• https://github.com/pysal/submodule_template/issues/45#issue-1941064101
• https://github.com/orgs/pysal/discussions/1278#discussioncomment-13567804
• https://github.com/pysal/pysal/issues/1338

[codecov[bot]]

Codecov Report

:white_check_mark: All modified and coverable lines are covered by tests. :white_check_mark: Project coverage is 96.2%. Comparing base (015e8bb) to head (78792d4). :warning: Report is 24 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##            main     #95     +/-   ##
=======================================
+ Coverage   95.0%   96.2%   +1.2%     
=======================================
  Files          6       7      +1     
  Lines        480     473      -7     
  Branches     109       0    -109     
=======================================
- Hits         456     455      -1     
- Misses        14      18      +4     
+ Partials      10       0     -10     

see 4 files with indirect coverage changes

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[jGaboardi]

@martinfleis can you give an explicit approval here (if you do so approve)?

[jGaboardi]

@martinfleis --> finally got around to updating this PR with the streamlined testing environment file naming. All are 100% visible now: