Migrate to Unity 2020.2

[davtamay]

Major changes

• Refactored project structure to remove working directly with files from Depanther's WebXR exporter and interaction package. We can now upgrade their packages independently of ours. We only use ControllerInteraction.cs and WebXRCamera.cs code directly in our scripts but I created prefixed "Komodo" scripts as extensions to avoid directly working on those scripts under the WebXR packages mentioned above.

• Added Assembly Definitions for Komodo.Runtime Komodo.Importer, Komodo.Utilities to help with runtime and build time and to help isolate the project into a package.

• Adjusted Scene changing functionality to use the new loaded scene lighting settings

Minor Changes

[wallacerob]

Known issues:

• Drawing rendering. Memory access out of bounds error.
• Mood board assets do not render.