spike: build out automated content version of the new site prototype

[htmlandbacon]

What

Following the design demo we should build out a first version of an automated content version of the prototype.

This should take a base files and provide a structure back to the templates.

We should consider this in the same way as we do on the current site i.e process files, extract data, reuse the content

Why

We currently only have a flat version of this, so we need to make a more related content version

Done when

• Overlay structure onto prototype
• Document out collections and format of files
• Re-use data to re-build the prototype
• Document and build out some additional component structures across the main, accessibility and research page
• Build out "new" navigation design

Outcomes

Updated prototype to be driven by the file formats

Related stories

• Ideate: Design exploration of DWP/Design system Navigation

[htmlandbacon]

This is closed in favour of the bigger ticket #658