[Feature Request]: Bar chart - loading state

[vicky-comeau]

Component that this feature request involves

BarChart

Is your feature request related to a problem? Please describe

We couldn't use bar chart here because it didn't easily support a loading state: https://dev.azure.com/officevibe/Officevibe/_git/Officevibe/pullrequest/27904?_a=files&path=%2Fportal%2Fapp%2Fsrc%2Frecognition%2Freport%2Fcomponents%2Fmost-popular-categories-component%2FRecognitionReportMostPopularCategoriesCardLoading.jsx&discussionId=307560

Describe the solution you'd like

Add a loading state

Describe alternatives you've considered

No response

Additional context

No response