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 89.79%. Comparing base (c3ba558) to head (208b02e).
⚠️ Report is 229 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #810      +/-   ##
==========================================
+ Coverage   85.30%   89.79%   +4.48%     
==========================================
  Files          46      105      +59     
  Lines        2219     6282    +4063     
  Branches      306      415     +109     
==========================================
+ Hits         1893     5641    +3748     
- Misses        281      543     +262     
- Partials       45       98      +53     

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