RE2022-258: Add genome_attribs histogram endpoint

[MrCreosote]

No description provided.

[codecov]

Codecov Report

Attention: 22 lines in your changes are missing coverage. Please review.

Comparison is base (36a57d2) 46.73% compared to head (14ced60) 46.70%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #533      +/-   ##
==========================================
- Coverage   46.73%   46.70%   -0.04%     
==========================================
  Files          73       73              
  Lines        6201     6235      +34     
==========================================
+ Hits         2898     2912      +14     
- Misses       3303     3323      +20     

Files	Coverage Δ
src/service/data_products/common_models.py	90.16% <100.00%> (+0.50%)	⬆️
src/service/data_products/genome_attributes.py	32.22% <35.29%> (+0.56%)	⬆️

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[Tianhao-Gu]

LGTM