[ZEPPELIN-2215] Progress bar for Spell execution

[1ambda]

What is this PR for?

Add progress bar for spell execution.

• Used RUNNING state to display progress bar
• Decided not to display {number}% for spell, since we can't calculate in advance.

What type of PR is it?

[Improvement]

Todos

NONE

What is the Jira issue?

ZEPPELIN-2215

How should this be tested?

• Install any spell what you want. However, I suggest zeppelin-echo-spell@1.0.6 because it allow you to get delayed result (default delay is 1000 millisecond.)
• Execute the spell

Screenshots (if appropriate)

Questions:

• Does the licenses files need update? - NO
• Is there breaking changes for older versions? - NO
• Does this needs documentation? - NO

[soralee]

Tested and It's work as described, LGTM

[1ambda]

@soralee Thanks for review! What do you think about %? Should we keep it for spell?

[AhyoungRyu]

Looks good! Regarding %, if the percentage means nothing, then it's okay with not showing it i think.

[soralee]

@1ambda could you rebase this because of conflicts?

[1ambda]

I'v just rebased to resolve conflict.

[1ambda]

CI passed.

[AhyoungRyu]

Merge into master if there are no more comment on this.