refactor: Make SQLSink a generic with a SQLConnector type parameter

[edgarrmondragon]

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📚 Documentation preview 📚: https://meltano-sdk--2564.org.readthedocs.build/en/2564/

[codspeed-hq]

CodSpeed Performance Report

Merging #2564 will not alter performance

_{Comparing edgarrmondragon/refactor/sql-sink-generic-connector (65e7e22) with main (e0197cd)}

Summary

✅ 6 untouched benchmarks

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 89.47%. Comparing base (e0197cd) to head (65e7e22).
Report is 133 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2564   +/-   ##
=======================================
  Coverage   89.46%   89.47%           
=======================================
  Files          58       58           
  Lines        4795     4796    +1     
  Branches      937      937           
=======================================
+ Hits         4290     4291    +1     
  Misses        352      352           
  Partials      153      153           

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