Allow integration with Pomerium proxy on GCP Cloud Run

Is your proposal related to a problem?

We are using Beyond Corp approach with Pomerium proxy. It can provide user data from connected identity provider which would make it even easier to work with ToolJet.

Describe the solution you'd like

Make it possible to use Pomerium in front of ToolJet on Cloud Run. This require to use other header for Authentication as it is used by service-to-service auth on GCP Cloud Run. https://www.pomerium.com/guides/cloud-run.html

Example can be Grafana integration https://www.pomerium.com/guides/grafana.html

Describe alternatives you've considered

If the feature is approved, would you be willing to submit a PR?

I can try