[expressions] passing custom labels to renderers

[ppisljar]

What should be the best practice to pass custom labels to renderers.

Approach we currently suggest is to have a label property or multiple properties on each dimension when that makes sense. If the property was not set by the user fallback to datatable column title.

[conorheffron]

@ppisljar

It looks like there is a few options available for this action.

1. Custom Label from Index Pattern Management via Data Views

• https://www.elastic.co/docs/explore-analyze/find-and-organize/data-views#managing-fields

2. Directly using Discover

• Ability to set a custom field name in Discovery and Saved Searches #15246 (comment)

3. displayAsText on Elastic UI

• https://eui.elastic.co/docs/components/data-grid/schema-and-columns/#EuiDataGridColumn-prop-displayAsText