feat(proto): add ColRawOf[T]

[ernado]

No description provided.

[codecov]

Codecov Report

Merging #88 (b086372) into main (07bc76a) will decrease coverage by 0.16%.
The diff coverage is 58.69%.

@@            Coverage Diff             @@
##             main      #88      +/-   ##
==========================================
- Coverage   77.96%   77.80%   -0.17%     
==========================================
  Files         116      117       +1     
  Lines        5373     5419      +46     
==========================================
+ Hits         4189     4216      +27     
- Misses        987     1003      +16     
- Partials      197      200       +3     

Impacted Files	Coverage Δ
proto/col_raw_of.go	58.69% <58.69%> (ø)

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