feat: func Sum use Additive type

[codecov[bot]]

Codecov Report

Merging #217 (192e998) into dev (7356bbf) will increase coverage by 0.16%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##              dev     #217      +/-   ##
==========================================
+ Coverage   95.79%   95.96%   +0.16%     
==========================================
  Files          54       54              
  Lines        3046     3046              
==========================================
+ Hits         2918     2923       +5     
+ Misses         98       96       -2     
+ Partials       30       27       -3     

Files Changed	Coverage Δ
slice/aggregate.go	100.00% <100.00%> (ø)

... and 3 files with indirect coverage changes

:mega: We’re building smart automated test selection to slash your CI/CD build times. Learn more