Migrate Database Update Github action to a GCP function

[davidgamez]

Describe the problem

Why should we migrate the Database Update Github action to a GCP function?

• The Database Update Github action generates the DB models that, in certain situations, can be out of sync with the underlying code.
• The content update can be triggered in a context different from Github actions.

Proposed solution

• Create a GCP function based on the populate script
• Create a queue and trigger the events from the catalog repository after a PR is mergemerged

Alternatives you've considered

No response

Additional context

No response

[emmambd]

Nothing broke in https://github.com/MobilityData/mobility-feed-api/actions/runs/19147368552 (woohoo!)

But the actual new feeds didn't show up: MobilityData/mobility-database-catalogs#1114 cc @jcpitre

[emmambd]

@jcpitre I've moved this back into code review so we make sure to discuss it/create a follow up issue on Monday. This is blocking any new feed additions at the moment, so I'd like to prioritize it next week.

[jcpitre]

@jcpitre I've moved this back into code review so we make sure to discuss it/create a follow up issue on Monday. This is blocking any new feed additions at the moment, so I'd like to prioritize it next week.

Corrected by #1450