Guided setup for Google Cloud IAM integration - 2

What does this MR do and why?

Step 2 to implement the Google Cloud identity and access management (IAM) integration. In this step we create a custom form.

Changelog: changed

EE: true

MR acceptance checklist

Please evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

Screenshots or screen recordings

Before	Goal	After

How to set up and validate locally

Go to /groups/flightjs/-/settings/integrations/google_cloud_platform_workload_identity_federation/edit to see the banner and new title.