chore: add presubmit check for generated types for direct resources

[jingyih]

Follow up of #3375.

This PR adds a presubmit check to prevent unintended manual edits to the generated types for direct resources. This will ensure that the tools can be safely rerun.

To opt-in the check, create a configuration YAML file and place it in the dev/tools/controllerbuilder/config directory. Here’s an example configuration file:

service: google.cloud.bigquery.datatransfer.v1
apiVersion: bigquerydatatransfer.cnrm.cloud.google.com/v1beta1
generateMapper: true
resources:
  - kind: BigQueryDataTransferConfig
    protoName: TransferConfig
    skipScaffoldFiles: true # files were scaffolded using a previous template, making them incompatible with the new scaffolding template.

[google-oss-prow]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by:
Once this PR has been reviewed and has the lgtm label, please assign cheftako for approval. For more information see the Kubernetes Code Review Process.

The full list of commands accepted by this bot can be found here.

Needs approval from an approver in each of these files:

• OWNERS

Approvers can indicate their approval by writing /approve in a comment
Approvers can cancel approval by writing /approve cancel in a comment

[jingyih]

/cc @yuwenma @justinsb

Let me know your thoughts. I prefer that we add this check to ensure the tools can be safely rerun on the generated code. In the future, this could become an exit criteria for a direct beta resource.