GCP integrations

[MarkEdmondson1234]

Prework

• [x ] I understand and agree to the code of conduct and the contributing guidelines.
• [x ] I have already submitted a discussion topic or issue to discuss my idea with the maintainer.

Related GitHub issues and pull requests

• Ref: Google Cloud integrations #720

Summary

Implementing tar_resources_gcp as specced in #720 (comment)

[wlandau]

Looks great, thank you so much @MarkEdmondson1234! My comments are minor, those and the lints are the only issues.

[MarkEdmondson1234]

Thanks for feedback! Have put them in

[wlandau]

Thanks, Mark. Would you regenerate the Rd files? I think that will fix the checks.

[wlandau]

Sorry, one more thing I forgot: would you add a tests/testthat/test-tar_resources_gcp.R file much like the existing tests/testthat/test-tar_resources_aws.R? That should restore full code coverage.

[MarkEdmondson1234]

Test added, but only one since the other AWS ones didn't apply (part size and region)

[wlandau]

Looks great!