WIP - Sampling and suggestion

[KentonParton]

Description

In this PR we are adding support for Sampling and improved expectation suggestions.

Sampling
You are now able to sample data in the following ways for physical tables.

• Sample using limit
• Sample using random
• Sample using mod
• Sample using a list
• Sample using hash

Suggestions
We have moved to using the GE Data Assistant which provides far more suggestions than the Validator implementation.

Additional test coverage has also been added for app.core.runner.

Fixes # (issue)

• When generating suggestions, if an exception was thrown, the suggestions job would fail instead of catching the exception and moving on to the next column/expectation.

Type of change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)

Checklist:

• I have performed a self-review of my own code
• All GitHub workflows have passed
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings
• Any dependent changes have been merged and published in downstream modules

[KentonParton]

A couple updates still need to be made in the UI, specifically, a SQLite icon needs to be added for local development. It should be noted that we do not want to include SQLite for production for security purposes.

[codecov-commenter]

Codecov Report

Base: 66.88% // Head: 71.10% // Increases project coverage by +4.21% 🎉

Coverage data is based on head (f22cabc) compared to base (cd05796).
Patch coverage: 71.13% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #67      +/-   ##
==========================================
+ Coverage   66.88%   71.10%   +4.21%     
==========================================
  Files          67       70       +3     
  Lines        3053     3267     +214     
==========================================
+ Hits         2042     2323     +281     
+ Misses       1011      944      -67     

Impacted Files	Coverage Δ
backend/app/utils.py	79.45% <36.36%> (+6.87%)	⬆️
backend/app/core/sample.py	67.79% <42.10%> (-9.13%)	⬇️
backend/app/models/expectation.py	84.30% <58.69%> (+0.03%)	⬆️
backend/app/models/dataset.py	93.54% <85.71%> (-1.00%)	⬇️
backend/app/models/datasource.py	69.85% <92.85%> (+0.25%)	⬆️
backend/app/core/runner.py	93.54% <95.65%> (+58.32%)	⬆️
backend/app/api/api_v1/endpoints/dataset.py	98.36% <100.00%> (+0.13%)	⬆️
backend/app/core/security.py	58.33% <100.00%> (ø)
backend/app/logger.py	100.00% <100.00%> (ø)
backend/app/models/sampling.py	100.00% <100.00%> (ø)
... and 8 more

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