Subspace templates: template preview

[SimoneZaza]

Description

As a user, I want to get a preview before I choose a specific subspace

Acceptance criteria

• [ ] Use standard preview window with template info on the left
• [ ] On the right, show innovation flow like the innovation flow template preview
• [ ] Per state, show an accordion with the callout titles, clicking on a title expands the accordion tab and shows the description + whiteboard preview (in case of a whiteboard callout). Add icon for callout/contribution type in front of the title
• [ ] TBD how to show the context

Additional Context

MUI accordion https://mui.com/material-ui/react-accordion/

Areas that will be affected

To be added during the refinement