[kibana](implement visual calculate UI bucket script aggregation)

[pedrosk]

Describe the feature:

Looking for is to add a "column" based on calculation on the aggregation result in Table visualization in Kibana in an easy, fast and visual way with a few clicks.

The proposed solution would be UI driven approach for the table visualization to support bucket script aggregation. It would use visual "buttons" for plus +, minus -, multiply x, divide /, etc.

Argument: While there is Visual builder fully capable of conceiving this, I find this not easy and not clean solution. Table is favored due to fact that is show only a table and nothing else as a result.

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Simplified idea of the UI for bucket script aggregation

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Resulting table This mock up shows what would a resulting table look like. Note the far right "delta_percent" calculated bucket in this example.

Describe a specific use case for the feature:
Solution of table visualization to support bucket script aggregation. It would use visual "buttons" for plus +, minus -, multiply x, divide /, etc.

[timroes]

Duplicate of #4707