feat: update hasher registry to work with Maven central and add MD5 hash

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Bencher

Report	Mon, July 1, 2024 at 16:02:29 UTC
Project	theseus-rs/postgresql-embedded
Branch	add-md5-hash
Testbed	localhost

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Benchmark	Latency	Latency Results nanoseconds (ns)
extract	➖ (view plot)	153,770.00
lifecycle	➖ (view plot)	1,166,000,000.00

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Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 99.49%. Comparing base (97a7447) to head (71cd379).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #96 +/- ## ======================================= Coverage 99.49% 99.49% ======================================= Files 82 83 +1 Lines 8725 8737 +12 ======================================= + Hits 8681 8693 +12 Misses 44 44 ```

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