Add Fortran ErrorV and associated wrapping code

[znicholls]

Description

Checklist

Please confirm that this pull request has done the following:

• Tests added
• Documentation added (where applicable)
• Changelog item added to changelog/

[znicholls]

@mzecc this is now worth having a look through.

It is still quite scrappy, so think about things you would change while reading. We can talk about them tomorrow and do some refactoring together

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 100.00%. Comparing base (83b9f74) to head (e63704f).
⚠️ Report is 52 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff            @@
##              main       #25   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files            3         7    +4     
  Lines           18        68   +50     
=========================================
+ Hits            18        68   +50     

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