Endpoint to accept & return Nextjs manifests

[matejminar]

Talked to @lforst about plan for Next.js manifests - idea is to create an endpoint for a first test that allows creation, update and retrieval of manifests

Design is t.b.d. but first idea is a JSON that we persist in the database, which may then be extended via the PUT over time to represent a kind of "project state".

• let's also explore source bundles for this

[lforst]

let's also explore source bundles for this

Unless there is an obvious reason to do so, that would be an extremely bad idea. Increases complexity on every end 10-fold for no upside.