Add logic to allow for headers to be dropped/rearranged in mdio_to_segy

[BrianMichell]

Resolves #769

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.53%. Comparing base (c3ba558) to head (9b86c75).
⚠️ Report is 234 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #810      +/-   ##
==========================================
+ Coverage   85.30%   91.53%   +6.23%     
==========================================
  Files          46      124      +78     
  Lines        2219     7257    +5038     
  Branches      306      439     +133     
==========================================
+ Hits         1893     6643    +4750     
- Misses        281      526     +245     
- Partials       45       88      +43     

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