Existing approaches and design for hyperparameter-tuning

[ddutta]

https://github.com/tobegit3hub/advisor
https://github.com/CiscoAI/hyper-advisor-client
https://github.com/mlkube/katib

Please feel free to add ...

[gaocegege]

We are trying to collaborate with @libbyandhelen to implement more algorithms which is in advisor or ciscoAI's client, thus going to close the issue. Please feel free to leave comments if you have any thought about it.