feat: install postgresql embedded to rsql configuration directory

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Bencher

Report	Sat, March 16, 2024 at 04:05:34 UTC
Project	theseus-rs/rsql
Branch	postgresql-embedded-install-directory
Testbed	localhost

Benchmark	Latency	Latency Results nanoseconds (ns)
version	➖ (view plot)	46054000.000

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[codecov[bot]]

Codecov Report

Attention: Patch coverage is 85.18519% with 8 lines in your changes are missing coverage. Please review.

Project coverage is 86.36%. Comparing base (6db237b) to head (ae22cbb).

Files	Patch %	Lines
rsql_core/src/drivers/postgresql.rs	77.77%	4 Missing :warning:
rsql_core/src/shell/repl.rs	0.00%	4 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #30 +/- ## ========================================== - Coverage 86.45% 86.36% -0.10% ========================================== Files 33 33 Lines 2731 2764 +33 ========================================== + Hits 2361 2387 +26 - Misses 370 377 +7 ```

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