feat: bq configurable partitions

[achettyiitr]

Description

• Added the ability to choose partition columns (loaded_at, received_at) for the supported partition types (HOUR, DAY) for BigQuery.
• By default, if nothing is specified Ingestion Time (_PARTITIONTIME) with DAY level partition is used.
• Corresponding UI changes: feat: bq configurable partitions rudder-integrations-config#1630

Linear Ticket

• Resolves PIPE-1352
• Resolves PIPE-1421

Security

• The code changed/added as part of this pull request won't create any security issues with how the software is being used.

[codecov]

Codecov Report

Attention: Patch coverage is 78.97574% with 78 lines in your changes missing coverage. Please review.

Project coverage is 72.90%. Comparing base (e37b0e9) to head (e19da86).
Report is 2 commits behind head on master.

Files with missing lines	Patch %	Lines
warehouse/integrations/bigquery/bigquery.go	75.32%	56 Missing and 20 partials ⚠️
warehouse/integrations/bigquery/partition.go	95.55%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #5133      +/-   ##
==========================================
- Coverage   72.94%   72.90%   -0.04%     
==========================================
  Files         438      439       +1     
  Lines       50896    51109     +213     
==========================================
+ Hits        37125    37262     +137     
- Misses      11339    11400      +61     
- Partials     2432     2447      +15     

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[lvrach]

if the column is not found we fall-back to using _PARTITIONTIME

[achettyiitr]

Yeah, this is just a safety check.