Adding explicit and_ function

[ilongin]

It's possible to use & for AND expressions, but sometimes it's just more handy to have explicit and_ function, just like sqlalchemy has.
Also we already have explicit or_

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 87.70%. Comparing base (1e8bec1) to head (306158f).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #910   +/-   ##
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  Coverage   87.69%   87.70%           
=======================================
  Files         130      130           
  Lines       11665    11673    +8     
  Branches     1586     1588    +2     
=======================================
+ Hits        10230    10238    +8     
  Misses       1038     1038           
  Partials      397      397           

Flag	Coverage Δ
datachain	87.62% <100.00%> (+<0.01%)	⬆️

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