Added a builder section to local.template.values.yaml

[barankyle]

Summary

api deployment assumes the existence of builder.image.repository. This was missing in local.template.values.yaml. Copied a builder section over and had the repo point to lagunalabs/xrengine-builder

References

closes #insert number here

Checklist

• If this PR is still a WIP, convert to a draft
• ensure all checks pass
• When this PR is ready, mark it as "Ready for review"
• Changes have been manually QA'd
• Changes reviewed by at least 2 approved reviewer

QA Steps

List any additional steps required to QA the changes of this PR, as well as any supplemental images or videos.