Why: the new vimpack repo's woodpecker pipelines set `serviceAccountName: vimpack-ci`, which does not exist in the woodpecker namespace yet.
- Add bare `vimpack-ci` ServiceAccount in `apps/base/woodpecker/` and register it in the kustomization.
Reviewed-on: #454
Co-authored-by: unkin-agent <unkin-agent@unkin.net>
Co-committed-by: unkin-agent <unkin-agent@unkin.net>
