add arrays contains function

[shcheklein]

Adds:

chain.filter(array.contains("emd", 1.0)).show()

to be used in queries like:

embeddings = [[1.0, 2.0, 3.0], [4.0, 5.0, 6.0], [7.0, 8.0, 9.0]]
chain = DataChain.from_values(emd=embeddings).save("embeddings")
chain.filter(array.contains("emd", 1.0)).show()

TODO:

• Add tests
• Check CH
• Update docs and examples

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Codecov Report

Attention: Patch coverage is 60.00000% with 10 lines in your changes missing coverage. Please review.

Project coverage is 87.55%. Comparing base (13e5c13) to head (3f689cd).

Files with missing lines	Patch %	Lines
src/datachain/func/array.py	20.00%	8 Missing ⚠️
src/datachain/sql/sqlite/base.py	71.42%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #860      +/-   ##
==========================================
+ Coverage   87.53%   87.55%   +0.02%     
==========================================
  Files         128      128              
  Lines       11369    11390      +21     
  Branches     1538     1539       +1     
==========================================
+ Hits         9952     9973      +21     
- Misses       1029     1030       +1     
+ Partials      388      387       -1     

Flag	Coverage Δ
datachain	87.48% <60.00%> (+0.01%)	⬆️

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