SNOW-1789757 Support GCP region specific endpoint

[sfc-gh-knozderko]

Description

SNOW-1789757 Support GCP region specific endpoint

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 80.48780% with 8 lines in your changes missing coverage. Please review.

Project coverage is 86.32%. Comparing base (d212fc7) to head (ded25c2).

Files with missing lines	Patch %	Lines
...ata/Core/FileTransfer/StorageClient/SFGCSClient.cs	80.64%	5 Missing and 1 partial ⚠️
Snowflake.Data/Core/RestResponse.cs	80.00%	1 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #1064      +/-   ##
==========================================
+ Coverage   86.31%   86.32%   +0.01%     
==========================================
  Files         121      121              
  Lines       11785    11821      +36     
  Branches     1197     1205       +8     
==========================================
+ Hits        10172    10205      +33     
  Misses       1329     1329              
- Partials      284      287       +3     

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