[Feature]: New Layouts

[thombruce]

Feature request

Right now, we have essentially one layout that functions reasonably well as a blog. But it doesn't take much to transform a blog into a docs site or a storefront. Add additional layouts/styles for:

• Blog (done, but open to tweaking)
• Docs (should show a sidebar with contents by default and utilise the ToC component)
• Storefront (we're not adding store functionality yet, so maybe call this 'gallery' for now)

Other layouts/styles worth considering:

• StackOverflow-like "conversations"; Q&A
• Reddit-like message boards
• Surveys and survey results
• Dashboard

Dashboard is the bridge that connects layouts back to TNT Core (as of now, all layouts are in TNT Content because they predominantly concern how content is displayed and lean on the documentDriven approach).

A sort of dashboard layout utility might be of benefit to TNT Core...

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