feat(Bar Chart): Show the total number above each bar in a stacked bar chart

[carden-steven]

Is there an existing issue for this?

• I have searched the existing issues

Is your feature request related to a problem? Please describe the problem.

For stacked bar charts, there is no way to see the total value for each bar.

Describe the solution you'd like

Add a boolean parameter to stacked bar charts that determines whether to show a total above each bar.

Additional context

[bb-auto]

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