refactor: Streamline setup.sh

[rogerthatdev]

This PR reduces execution time of setup.sh from around 12 minutes to about 4 minutes and adds a clean-up script for destroying and deleting Emblem-deployed Cloud resources.

This PR will:

• Add --async flag to gcloud builds submit commands in setup.sh
• Execute build commands for containers sooner in setup.sh
• Remove the prompt to setup CI/CD from setup.sh
• Defaults SKIP_AUTH to true in setup.sh
• Add a cleanup.sh that cleans up resources via terraform destroy and gcloud (except for Firebase seed data, see Add option for deleting seed data to data seeding build job #692).
• Add check_for_build_then_run function to setup.sh that will wait for build completion before deploying Run service and build log URL if not successful.

[grayside]

Left some suggestions, but overall good. FWIW, I think this script is now carrying a good amount of technical debt and complexity and think we should consider prioritizing changes around keeping it from growing further.