Add CDN and fix bugs

Contents (#3)

IMPORTANT: There are 2 breaking changes.

Enhancements

• Add database_tier input
• Enable CDN for network endpoint group
• Add inputs for cloud run service-level min instance count and revision-level max instance count

Fixes

• 💥 BREAKING CHANGE: Factor out API URL as input
• Ignore changes in manager cloud run job

Refactoring

• 💥 BREAKING CHANGE: Expect maintainer service account emails and avoid creating them

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Upgrade instructions

💥 Factor out API URL as input

Use the api_url input

💥 Expect maintainer service account emails and avoid creating them

Provide the email addresses for the maintainer service accounts to the maintainer_service_account_emails variable instead of their names to the maintainer_servicie_account_names variable

Add database query insights

Contents (#2)

New features

• Add database_availability_type input

Enhancements

• Enable query insights in database

Refactoring

• Rename databases file to database

Style

• Run terraform fmt

Create module

Contents (#1)

New features

• Create module