Motivation / Problem

When I am displaying data on a heatmap
I need to label the two dimensions of the heatmap
So I can optionally provide additional context as to what the data is

Describe the solution you'd like
Expose optional axis labeling options in heatmap visualizations for upstream consumption

Describe alternatives you've considered
None - there's no great workaround today

Kibana Cross Issues
elastic/kibana#102036
elastic/kibana#72390

Checklist

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