Add Multi-view Multi-aspect Neural Recommendation (MMNR) for Next Basket Recommendation

[lthoang]

Description

This is an adaptation of MMNR from the author implementation into cornac

Related Issues

https://github.com/PreferredAI/cornac/issues/579

Checklist:

• [ ] I have added tests.
• [ ] I have updated the documentation accordingly.
• [ ] I have updated README.md (if you are adding a new model).
• [ ] I have updated examples/README.md (if you are adding a new example).
• [ ] I have updated datasets/README.md (if you are adding a new dataset).
• [ ] I have update requirements