[ENHANCEMENT-2]: Heatmap visualization config panel features v1

[ruchika-narang]

Implementation of Heatmap leftover config panel features as mentioned in opensearch-project/dashboards-observability#125. Linking the older enhancement issue for the reference of remaining features #791 .

Features to implement:

• Legend placement (filter buttons)
  • bottom
  • right

[ruchika-narang]

As per the discussion in the call, we are currently implementing the colorscale is the legend for heatmap. Currently we are just implementing show/hide of colorscale.

CC: @btzeng @mengweieric @abasatwar @spattnaik

[btzeng]

@ruchika-narang Yes due to plotly limitation. Please make sure the orientation of the colorscale on the right hand side is vertical

[ruchika-narang]

@btzeng following is the current implementation of colorscale for heatmap. Let me know if this looks fine to you.

Thanks!

[ruchika-narang]

This ticket has been merged to main.