Feat: Infinite Floor

[JuanSalice]

What does this PR change?

This PR adds the new infinite floor to the world.

How to test the changes?

1. Go to: https://play.decentraland.zone/?renderer-branch=feat/infinite-floor
2. Move around the world and check the infinite floor is being rendered properly

Our Code Review Standards

https://github.com/decentraland/unity-renderer/blob/master/docs/code-review-standards.md

[github-actions[bot]]

After the CI passes:

• This branch can be previewed at https://play.decentraland.zone/?renderer-branch=feat/infinite-floor
• Code coverage report: https://renderer-artifacts.decentraland.org/branch-coverage/feat/infinite-floor
• Benchmark report: https://renderer-artifacts.decentraland.org/branch-benchmark/feat/infinite-floor/index.html