Create standard devnet node container pattern

[CyrusVorwald]

What needs to be done

Create a simple pattern for node containers.

Why it needs to be done

There is no clear methodology for building or running devnet nodes, so each new integration would likely do its own thing.

Acceptance Criteria

Adding a new devnet node for a new chain should be as simple as describing a series of k8 objects.
Should still be able to follow the getting-started guide to run e2e tests from scratch and not break CI.