Lat/lon rules

[forman]

Added core rules "lat-coordinate" and "lon-coordinate".

Checklist (strike out non-applicable):

• Changes documented in CHANGES.md
• Related issue exists and is referred to in the PR description and CHANGES.md
• Added docstrings and API docs for any new/modified user-facing classes and functions
• Changes/features documented in docs/*
• Unit-tests adapted/added for changes/features
• Test coverage remains or increases (target 100%)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.30%. Comparing base (b0b61db) to head (ddb1d5c).
Report is 8 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #25      +/-   ##
==========================================
+ Coverage   97.24%   97.30%   +0.06%     
==========================================
  Files          55       56       +1     
  Lines        2174     2223      +49     
  Branches      298      304       +6     
==========================================
+ Hits         2114     2163      +49     
  Misses         32       32              
  Partials       28       28              

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.