docs: Gallery of supported chart types

[julianna-ciq]

Provide a gallery of different chart types and features on a page. The charts should be directly embedded, but should include links to a codepen, so that developers can see how it was put together.

Chart type examples:

• bar
• line
• bar-line
• band
• box
• candlestick
• histogram
• heatmap
• correlation matrix
• pie chart
• donut chart
• scatter plot

Features:

• grouped chart
• mixed chart types
• logarithmic axes
• time axes
• labels