feat: asynchronous query

[karel-rehor]

Closes #

Proposed Changes

• add query_async method to query_api
• move query ticket preparation statements to reusable methods in query_api
• in query_async method wrap call to FlightClient.doGet in current event loop retrieved from asyncio
• in query_async method wrap FlightStreamReader translations in same event loop
• unit tests of changes to query_api
• in InfluxDBClient3 expose these changes with new query_async method
• unit and integration tests of changes to InfluxDBClient3
• refactor flight server mocks and test utility functions to tests/util
• in query_api.__init__() improve merge of _flight_client_options so that some values do not get dropped or overwritten

Checklist

• CHANGELOG.md updated
• Rebased/mergeable
• A test has been added if appropriate
• Tests pass
• Commit messages are conventional
• Sign CLA (if not already signed)

[codecov]

Codecov Report

Attention: Patch coverage is 89.36170% with 5 lines in your changes missing coverage. Please review.

Project coverage is 61.92%. Comparing base (95477f8) to head (774885e).
Report is 17 commits behind head on main.

Files with missing lines	Patch %	Lines
influxdb_client_3/__init__.py	66.66%	3 Missing ⚠️
influxdb_client_3/query/query_api.py	94.73%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #123      +/-   ##
==========================================
+ Coverage   61.63%   61.92%   +0.28%     
==========================================
  Files          33       33              
  Lines        2101     2135      +34     
==========================================
+ Hits         1295     1322      +27     
- Misses        806      813       +7     

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[bednar]

Please update the CHANGELOG to outline the next steps for achieving full asyncio support—e.g., indicating if the next PR will add async write functionality or something else along those lines.

[karel-rehor]

Updated

[bednar]

LGTM 🚀