feat(postgres-driver): Migrate to our Pool implementation

[ovr]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 57.53%. Comparing base (dfc8033) to head (458b532).

Files with missing lines	Patch %	Lines
packages/cubejs-backend-shared/src/pool.ts	0.00%	1 Missing ⚠️

❗ There is a different number of reports uploaded between BASE (dfc8033) and HEAD (458b532). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (dfc8033)	HEAD (458b532)
cubesql	1	0

Additional details and impacted files

@@             Coverage Diff             @@
##           master   #10389       +/-   ##
===========================================
- Coverage   83.29%   57.53%   -25.77%     
===========================================
  Files         250      222       -28     
  Lines       74686    17335    -57351     
  Branches        0     3544     +3544     
===========================================
- Hits        62208     9973    -52235     
+ Misses      12478     6827     -5651     
- Partials        0      535      +535     

Flag	Coverage Δ
cube-backend	57.53% <0.00%> (?)
cubesql	?

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