art sizes and hashes

[mike0sv]

closes #90

[codecov]

Codecov Report

Merging #131 (bfcf0a6) into main (9100d10) will increase coverage by 0.06%.
The diff coverage is 92.47%.

@@            Coverage Diff             @@
##             main     #131      +/-   ##
==========================================
+ Coverage   80.43%   80.49%   +0.06%     
==========================================
  Files          57       59       +2     
  Lines        3542     3835     +293     
==========================================
+ Hits         2849     3087     +238     
- Misses        693      748      +55     

Impacted Files	Coverage Δ
mlem/cli/utils.py	60.41% <0.00%> (-0.41%)	⬇️
mlem/pack/docker/context.py	35.11% <0.00%> (ø)
mlem/contrib/dvc.py	37.68% <11.11%> (-1.72%)	⬇️
mlem/polydantic/lazy.py	85.29% <44.44%> (-14.71%)	⬇️
mlem/api/commands.py	75.89% <66.66%> (ø)
mlem/core/objects.py	90.64% <96.00%> (-0.18%)	⬇️
mlem/contrib/callable.py	97.72% <97.72%> (ø)
mlem/cli/info.py	97.29% <100.00%> (ø)
mlem/config.py	97.91% <100.00%> (-0.05%)	⬇️
mlem/contrib/catboost.py	96.96% <100.00%> (+0.04%)	⬆️
... and 18 more

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[mike0sv]

iterative/dvc#3069

[aguschin]

Looks good 👍
Would be good if you add few words here about why you went with md5 and not some other, considering that issue you posted ^

[mike0sv]

I went with it because I did it before I read all that =)
For now we use hashes only to change metafile when artifact changes (we don't even validate when downloading stuff from remotes). For this purpose, speed is the preference.
We can add validation and switch algo if we want, but I see that as dvc scope, and we can rely on it in the future