[feature] Show more information about best trial

[gaocegege]

/kind feature

Describe the solution you'd like
[A clear and concise description of what you want to happen.]

#986 (comment)

We show metrics and parameter assignments. I am not sure if I get your idea. Could you please explain more?

for example, for now if objective metrics is loss, in experiment or trial status, it show the best loss metrics minimum value like below:

observation:
  metrics:
    - name: loss
       value: 0.0001

we can detail it more for a better viewpoint like ray:

observation:
 metrics:
   - name: loss
     min: 0.0001
     max: 0.1234
     latest: 0.1111

Anything else you would like to add:
[Miscellaneous information that will assist in solving the issue.]

[andreyvelich]

This was implemented.

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Label	Probability
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