feat: get slices/ranges of arrays from backend (introduce api pagination)

[soofstad]

• [ ] So that pagination plugin only fetches the ones that are to be shown.
• [ ] Find out how to do "add one".
• [ ] When contained?
• [ ] When ask for top-level document, get everything.
• [ ] If pointing to a list, then perhaps take in a flag to specify pagination

[github-actions[bot]]

Stale issue message

[github-actions[bot]]

Stale issue message