feat: cache webmanifest for one day

[ojeytonwilliams]

Checklist:

• I have read freeCodeCamp's contribution guidelines.
• My pull request has a descriptive title (not a vague title like Update index.md)

@raisedadead if this caching strategy makes sense, can you add this to the client VMs?

Ref: freeCodeCamp/freeCodeCamp#55776

[raisedadead]

Do you want to deploy this? Would be great test of our Overlay network based SSH.

[ojeytonwilliams]

That's the stuff you previewed on Tuesday? Sure, I'll be around this afternoon if you've got time to walk me through it.