Add cache lifetimes for frontend components

[acouch]

Summary

The frontend and CDN will cache items across a couple of fronts. This task is to determine the correct cache lifetimes, document those, and implement them. The implementation should only be for adding or updating values for existing features / tools, not implementing new caches.

An in-exhaustive list includes.

• Fetch cache from server actions
• ISR cache (revalidate var) for opportunity and other pages
• cache lifetime for 404s in the CDN
• cache lifetime in the CDN for assets (images, files)

This ticket would entail updating the distribution settings in the CDN. If that is too much scope for a single ticket we could break them up.

Acceptance criteria

• cache lifetimes documented
• cache lifetime values updated or a new ticket is created if more work is needed to implement a value