Demonstrate deployment on Burr UI on GCP

[elijahbenizzy]

Is your feature request related to a problem? Please describe.

We have the s3 server as well as a fairly complex set of terraform files, but we don't have a simple deploy on GCP tutorial.

Describe the solution you'd like

A documentation page/example for how to deploy on GCP. We will link from the docs. Terraform would be nice too!

Ideally:

• Inside a VPN
• Uses S3 with the google-compatible API
• Simple, single-tenant server (no need for horizontal scaling as we are not write-bound)