feat: add CockroachDB driver

[brianheineman]

No description provided.

[github-actions]

Bencher Report

Branch	add-cockroachdb-driver
Testbed	localhost

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Benchmark	Latency	nanoseconds (ns)
postgres-embedded	📈 view plot ⚠️ NO THRESHOLD	825,980,000.00
postgresql-embedded	📈 view plot ⚠️ NO THRESHOLD	831,190,000.00
rusqlite	📈 view plot ⚠️ NO THRESHOLD	4,468,000.00
sqlite	📈 view plot ⚠️ NO THRESHOLD	4,805,400.00

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[codecov]

Codecov Report

Attention: Patch coverage is 72.72727% with 9 lines in your changes missing coverage. Please review.

Project coverage is 93.50%. Comparing base (131e899) to head (ccc43ea).
Report is 2 commits behind head on main.

Files with missing lines	Patch %	Lines
rsql_drivers/src/cockroachdb/driver.rs	65.38%	9 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #225      +/-   ##
==========================================
- Coverage   93.79%   93.50%   -0.30%     
==========================================
  Files          94       95       +1     
  Lines       12680    12251     -429     
==========================================
- Hits        11893    11455     -438     
- Misses        787      796       +9     

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