GDP impacts integration

[adrivinca]

transferring code from the message_data PR#594 as I need to make it accessible to reviewers during the paper submission phase

The code is not yet in line with many standards, including the CLI and testing. I will work on it during the paper revision phase

How to review

TBD

PR checklist

• Continuous integration checks all ✅
• Add or expand tests; coverage checks both ✅
• Add, expand, or update documentation.
• Update doc/whatsnew.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 64.7%. Comparing base (08dc7fc) to head (18b0faa).

Additional details and impacted files

@@           Coverage Diff           @@
##            main    #290     +/-   ##
=======================================
- Coverage   65.7%   64.7%   -1.0%     
=======================================
  Files        213     213             
  Lines      16463   16463             
=======================================
- Hits       10817   10668    -149     
- Misses      5646    5795    +149     

see 8 files with indirect coverage changes