SNOW-817091: Async execution

[sfc-gh-ext-simba-lf]

Description

• Adds the option to execute queries in async mode
• Adds the capability to asynchronously wait for the query to finish and get the results using the query ID
• Adds checking the query status
• Adds checking if query is still running or encountered an error

Checklist

• Code compiles correctly
• Code is formatted according to Coding Conventions
• Created tests which fail without the change (if possible)
• All tests passing (dotnet test)
• Extended the README / documentation, if necessary
• Provide JIRA issue id (if possible) or GitHub issue id in PR name

[codecov]

Codecov Report

Attention: Patch coverage is 79.59184% with 60 lines in your changes are missing coverage. Please review.

Project coverage is 84.28%. Comparing base (8fa5df5) to head (91f9ac8).

Files	Patch %	Lines
Snowflake.Data/Core/SFStatement.cs	62.65%	52 Missing and 7 partials ⚠️
Snowflake.Data/Core/QueryResultsAwaiter.cs	98.71%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #887      +/-   ##
==========================================
+ Coverage   84.23%   84.28%   +0.05%     
==========================================
  Files          88       89       +1     
  Lines        9402     9649     +247     
  Branches      884      912      +28     
==========================================
+ Hits         7920     8133     +213     
- Misses       1251     1282      +31     
- Partials      231      234       +3     

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[sfc-gh-knozderko]

But first fix all the comments.

[sfc-gh-ext-simba-lf]

I added utility functions IsStillRunning and IsAnError to SnowflakeDbConnection for parity with other connectors: https://docs.snowflake.com/en/developer-guide/python-connector/python-connector-api#is_still_running