Problem

We currently maintain starter Templates and example templates in coder/registry separately. This intrdoces a few issues

1. Drift in templates.
2. Missing new examples.
3. Misleading users in believing that its enough to contribute to coder/registry to update a template in Coder

Suggested Solution

Treat coder/registry as the soutce of truth and include the coder templates as a submodule or during the release process.