Reorganize some unittest

[ChenyuLInx]

#9961

This PR

• deleted tests that are moved to dbt-adapters
  • test_base_column.py
  • test_cache.py
• moved and reorganized the following tests
  • test_cli_flags.py
  • test_cli.py
  • test_config.py
  • test_constraint_parsing.py

Problem

Solution

Checklist

• I have read the contributing guide and understand what's expected of me
• I have run this code in development and it appears to resolve the stated issue
• This PR includes tests, or tests are not required/relevant for this PR
• This PR has no interface changes (e.g. macros, cli, logs, json artifacts, config files, adapter interface, etc) or this PR has already received feedback and approval from Product or DX
• This PR includes type annotations for new and modified functions

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 83.56%. Comparing base (4811ada) to head (aa0be57).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #9988      +/-   ##
==========================================
- Coverage   88.18%   83.56%   -4.62%     
==========================================
  Files         181      181              
  Lines       22593    22593              
==========================================
- Hits        19923    18880    -1043     
- Misses       2670     3713    +1043     

Flag	Coverage Δ
integration	83.56% <ø> (-2.01%)	⬇️
unit	?

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