Resizable protected queue

[jb55]

When importing a lot of stuff, the size of the circular buffer queue can get larger than our pre-allocated size. We should have dynamic, resizable queue sizes.

This would also allow us to have relatively small queues for our subscription queues, which are needlessly large at the moment.

[jb55]

We'll need this when we have to create 1000s of subscriptions after:

• change NIP-01 to only allow a single filter per REQ nostr-protocol/nips#1645

For:

• Last note per pubkey algo feed notedeck#619