Central Version Control for ML Models - for Intent Catcher

[danielkornev]

1. Add new service for ML Models Version Control system
2. Make it possible to send new items to it via SSH (for compat w/ Easy Intent Catcher) OR provide APIs to publish new tested and trained models (and then add integration with this service to Easy Intent Catcher)
3. Make a service that tracks updates in this ML Models Version Control system and automatically creates PR for each new model update

[danielkornev]

https://rasa.com/docs/rasa/model-storage - check out this