Move all renderer associated objects from Engine to EngineRenderer

[HexaField]

Summary

• fixes a problem with ts config making imports annoying
• moves all renderer associated objects from Engine to EngineRenderer
• clean up a few unnecessary objects on Engine object

References

part of #5834

Checklist

• CI/CD checks pass npm run check
  • Linter passing via npm run lint
  • Typescript passing via npm run check-errors
  • Unit & Integration tests passing via npm run test
  • Docker build process passing via npm run build-client
• If this PR is still a WIP, convert to a draft
• When this PR is ready, mark it as "Ready for review"
• Changes have been manually QA'd
• Changes reviewed by at least 2 approved reviewers

QA Steps

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

Reviewers

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