[Lens] Breakdown dimension for goal visualizations

[flash1293]

For horizontal goal, add a “vertical axis” (name chosen to stay consistent with xy chart) dimension group taking a bucket a single dimension to split the goal vis and render multiple goals one over the other. For vertical goal, a “horizontal axis” dimension group is added to render multiple goals side by side. The “split” dimension is applied before the metrics for min/max/goal/metric are fetched, so it’s possible to have uniform static values for these for all goals or do a metric calculation per bucket (e.g. using the “max of field1” for the “max” dimension will give the max just for the current goal and it will be different for each goal). To use the “overall max”, formula can be used (“overall_max(max(field1))”). Clicking one of the goal charts will create a filter for the value of the split dimension field

[elasticmachine]

Pinging @elastic/kibana-vis-editors @elastic/kibana-vis-editors-external (Team:VisEditors)

[teresaalvarezsoler]

I can't see the "Horizontal axis" option for the new gauges anymore... is it a functionality we removed? Should we close this issue?