Please select if your request is either something new or an enhancement

• Enhancement of an existing Feature.
• Request of a new feature.

Please select the area your request applies to. (Multiple selections are possible. You can leave blank if you're not sure.)

• Workspace - VSCode workspace, vaults, Intellisense/autocomplete, Dendron settings
• Lookup - Dendron's Lookup Command
• Views - Dendron Preview, Tree View, Side Panels in the UI
• Schema - Dendron Schemas
• Pod - Data import from / export to Dendron
• Publish - External Site Publish
• Markdown - Markdown features, such as syntax support and features

Is your feature request related to a problem? Please describe

problem is that footnotes are not supported in the dendron markdown previewer

Describe the solution you'd like

work with the footnotes extension that already exists to allow footnote support in rendered markdown docs

Describe alternatives you've considered

the external extension only works in default display

Additional context