Implement transformers to compute basic stats

[robomics]

No description provided.

[codecov]

Codecov Report

Merging #36 (244db62) into main (22a3b58) will decrease coverage by 0.08%.
Report is 20 commits behind head on main.
The diff coverage is 94.11%.

❗ Current head 244db62 differs from pull request most recent head 9252cbc. Consider uploading reports for the commit 9252cbc to get more accurate results

@@            Coverage Diff             @@
##             main      #36      +/-   ##
==========================================
- Coverage   82.07%   81.99%   -0.08%     
==========================================
  Files          79       80       +1     
  Lines        5289     5288       -1     
==========================================
- Hits         4341     4336       -5     
- Misses        948      952       +4     

Files Changed	Coverage Δ
src/hic/include/hictk/hic/pixel_selector.hpp	100.00% <ø> (ø)
src/transformers/stats_impl.hpp	94.11% <94.11%> (ø)

... and 4 files with indirect coverage changes