Use Echodata Platform and Beam_group1 Variables to Compute Depth for EK60/EK80

[ctuguinay]

Based on Emilio's #1205 PR. Addresses #790 and #1152.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.88%. Comparing base (9f56124) to head (a1b6ee6).
Report is 53 commits behind head on main.

Additional details and impacted files

@@             Coverage Diff             @@
##             main    #1319       +/-   ##
===========================================
+ Coverage   83.52%   93.88%   +10.36%     
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  Files          64        4       -60     
  Lines        5686      229     -5457     
===========================================
- Hits         4749      215     -4534     
+ Misses        937       14      -923     

Flag	Coverage Δ
unittests	93.88% <100.00%> (+10.36%)	⬆️

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[ctuguinay]

@leewujung This should be ready for review. The only changes I made from the last time we talked were how to deal with choosing Beam_group1 vs Beam_group2, and interpolating transducer depth time2 to ping_time if and only if they are not equal.