decouple sqlalchemy and client

[wey-gu]

close: #5 #9

[codecov]

Codecov Report

Attention: Patch coverage is 30.33708% with 186 lines in your changes missing coverage. Please review.

Project coverage is 24.00%. Comparing base (07be216) to head (c87a49d).
Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
py_pglite/clients.py	9.82%	101 Missing ⚠️
py_pglite/sqlalchemy/manager.py	54.44%	41 Missing ⚠️
py_pglite/utils.py	25.71%	26 Missing ⚠️
py_pglite/manager.py	38.46%	8 Missing ⚠️
py_pglite/sqlalchemy/fixtures.py	50.00%	7 Missing ⚠️
py_pglite/__init__.py	0.00%	2 Missing ⚠️
py_pglite/sqlalchemy/__init__.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #14      +/-   ##
==========================================
+ Coverage   20.64%   24.00%   +3.35%     
==========================================
  Files          15       17       +2     
  Lines        1114     1279     +165     
==========================================
+ Hits          230      307      +77     
- Misses        884      972      +88     

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