surfer: Investigate and enable auto-completers for referenced resources

Currently, the generator hardcodes `DisableAutoCompleters: true` for all referenced resources (e.g., in `newResourceReferenceSpec`). We should be research how this parameter works and how to determine if it should be enabled or disabled.  

## Relevant files

- `internal/surfer/gcloud/builder.go`
- `internal/surfer/gcloud/command.go`