feat: BigQuery common and provisioner classes

[man8pr]

What this PR changes/adds

Added:

• extensions/common/gcp/gcp-core/.../bigquery : common classes including BQ DataAddress, service client, and theBigQuery DataAddress Validator Extension to register DataAddress validators
• extensions/control-plane/provision/provision-bigquery : BQ provisioner for generating access token for data plane sink, including the BigQuery Provision Extension to register the provisioner

Why it does that

The PR adds first basic version of the BigQuery extension to exchange data to and from BigQuery tables.

Further notes

• To be added in following PR:

  • BigQuery data plane

• Limitations for this version:

  • provisioner requires destination table to exist, doesn't create new table if it doesn't
  • data is committed to the destination table only if no error occurred during the data transmission
  • no transmission retry in case of error
  • results are fetched via pages (size is fixed, 4 rows), max. size for serialized page data is 16 KiB
  • credentials for BQ services have default 1hr lifetime

Linked Issue(s)

Closes #50

[paullatzelsperger]

@man8pr I added the "Closes" keyword to the PR description, to automatically link the PR with the issue

[man8pr]

looking forward for the "service account refactoring", please solve DEPENDENCIES and I will merge this

Sure, on the refactoring now, it shouldn't be a large change