* feat: Add systemd service and production deployment
This modifies CI to use a dpkg produced from release to update and
run Coder on a tiny VM in GCP.
It's intentionally kept simple, because customers should
be able to get this same easy install experience.
* Update globalSetup.ts
* Update globalSetup.ts
* Update globalSetup.ts
* Update coder.yaml
* Use pinned version of Go
This brings an initial E2E test (really, an integration test - it's only running the server locally, as opposed to against a deployment - but it'd be easy to point playwright to a deployment).
Demo gif:

This test exercises a minimal flow for login:
- Run the `coderd` binary to start a server on 3000
- Create an initial user as part of setup
- Go through the login flow and verify we land on the projects page
It will be useful to have to ensure that #360 doesn't introduce a regression in the login flow
Future E2E tests that would be useful:
- Create a project & verify it shows in the UI
- Create a workspace and verify it shows in the UI