Upgraded to Unity 2021 and configured addressables to not rely on CCD

Updating Code for Release

Removed

Update ProjectVersion.txt

2020.3.16f1

Removed Addressables configuration for step by step guide

Upgraded Unity version to 2021.1.13

Project cleaned up

Initial State for workshop

Cleaned build cache and built asset bundles

Added floor collider

Added floor colliders and unlinked project from the cloud

Merge branch 'main' of https://github.com/UnityTechnologies/LoadyDung…

…eons into main