Automate Cloud Build github repo import

[palladius]

This solution is currently not feasible.
There is an alpha solution which I started working onto, but I want to wait until the solution doesn't require project allowlisting (at this moment I can try but other users can't).

[palladius]

first code is here:

https://github.com/palladius/clouddeploy-platinum-path/blob/main/examples/06alpha-cloud-build-programmatically.sh

[palladius]

Internal Google bug id 233706417