add modules (FaIR, Speedy, Oceananigans), increase coverage

[gaelforget]

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[codecov-commenter]

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Codecov Report

Attention: Patch coverage is 92.07547% with 21 lines in your changes missing coverage. Please review.

Project coverage is 91.24%. Comparing base (eaf7096) to head (47d9cd4).
Report is 5 commits behind head on master.

Files with missing lines	Patch %	Lines
src/Oceananigans.jl	91.66%	9 Missing ⚠️
src/Speedy.jl	88.73%	8 Missing ⚠️
src/FaIR.jl	88.23%	4 Missing ⚠️

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Additional details and impacted files

@@            Coverage Diff             @@
##           master     #128      +/-   ##
==========================================
+ Coverage   81.80%   91.24%   +9.43%     
==========================================
  Files          13       17       +4     
  Lines        1050     1314     +264     
==========================================
+ Hits          859     1199     +340     
+ Misses        191      115      -76     

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