update CCSDS Spacepackets API and docs

[robamu]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 96.38%. Comparing base (c5e075c) to head (031881e).
Report is 4 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #84      +/-   ##
==========================================
+ Coverage   96.36%   96.38%   +0.01%     
==========================================
  Files          93       93              
  Lines        7344     7381      +37     
==========================================
+ Hits         7077     7114      +37     
  Misses        267      267              

Flag	Coverage Δ
unittests	96.38% <100.00%> (+0.01%)	⬆️

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