refactor!: merge admin and standard clients, merge sync and async integration tests, use test fixtures for setup and teardown, add missing docstrings. vec-466 vec-344 vec-388 vec-481 vec-373

[dwelch-spike]

• Add missing docstrings to HNSWParams
• propogate index and record fixtures through async tests
• Remove deprecated wait_for_index_completion from tests
• Merges the sync and async test suites by parameterizing the sync and async clients (this is responsible for most of the removed code)
• Removes the service config tests, these will be replacaed soon by unit tests. I already have a branch started for this at vec-484.
• Speeds up the tests by splitting async and sync into separate, parallel jobs, configuring test indexes to index records more quickly, and removing the async test suite. Test runtime went from around 30minutes to around 4 minutes.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 69.73684% with 92 lines in your changes missing coverage. Please review.

Project coverage is 69.48%. Comparing base (b162a6e) to head (813d4b5).

Files with missing lines	Patch %	Lines
src/aerospike_vector_search/aio/client.py	71.25%	46 Missing ⚠️
src/aerospike_vector_search/client.py	68.05%	46 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #69      +/-   ##
==========================================
- Coverage   71.83%   69.48%   -2.35%     
==========================================
  Files          25       23       -2     
  Lines        2393     2353      -40     
==========================================
- Hits         1719     1635      -84     
- Misses        674      718      +44     

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[DomPeliniAerospike]

LGTM!