feat: add ability to create settings from a url

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Bencher

Report	Mon, March 25, 2024 at 15:41:55 UTC
Project	theseus-rs/postgresql-embedded
Branch	settings-from-url
Testbed	localhost

Benchmark	Latency	Latency Results nanoseconds (ns)
extract	➖ (view plot)	145030.000
lifecycle	➖ (view plot)	973630000.000

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Codecov Report

Attention: Patch coverage is 98.21429% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 97.72%. Comparing base (68aea10) to head (015c153).

Files	Patch %	Lines
postgresql_embedded/src/settings.rs	98.21%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #42 +/- ## ========================================== + Coverage 97.69% 97.72% +0.02% ========================================== Files 55 55 Lines 6425 6457 +32 ========================================== + Hits 6277 6310 +33 + Misses 148 147 -1 ```

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