Add projectRef destination type to LoggingLogSink

[rolandkool]

Checklist

• I did not find a related open enhancement request.
• I understand that enhancement requests filed in the GitHub repository are by default low priority.
• If this request is time-sensitive, I have submitted a corresponding issue with GCP support.

Describe the feature or resource

According to the Google documentation a logsink destination can be just a project.
The current LoggingLogSink resource does not support this destination, it only supports Topics, Buckets, Logbuckets and BQ datasets.

Additional information

The feature could be supported like this:

spec:
  folderRef:
    name: myfolder
  destination:
    projectRef:
      external: logging.googleapis.com/projects/mylogproject
  filter: '....'

Importance

No response