Convert the UnitySDK to a Packman Package.
- Separate Examples into a sample project.
- Move core UnitySDK Code into com.unity.ml-agents.
- Create asmdefs for the ml-agents package.
- Add package validation tests for win/linux/max.
- Update protobuf generation scripts.
- Add Barracuda as a package dependency for ML-Agents. (users no longer have to install it themselves).
* tests WIP
* add test for misses, remove obsolete test
* add filtering test
* cleanup
* 2d default, remove constants test
* use built in tags
* copy old physics settings
* manually sync physics transforms