Add support of grouped stacked bar charts

[raldone01]

I plot the power consumption of my tracked devices daily, monthly, ...
I would love to add another bar next to the stacked bar with my total consumption so I can get an idea of how much energy usage I am not tracking.

Apex Charts should already support this with stacked groups.
A older issue also mentioned this #550.

Describe the solution you'd like
Support for grouped stacked columns would be splendid.

Describe alternatives you've considered
I tried two charts next to each other but its just not the same.
The y axis scale is not the same.

[github-actions]

This issue is stale because it has been open 30 days with no activity. Remove stale label or comment or this will be closed in 10 days.

[raldone01]

Not stale...