Use boxo with provider queue input buffer

[gammazero]

No description provided.

[lidel]

Notes form colo:

• right now, by default provider queue is being persisted in leveldb datastore, which introduces extra disk writes and reads, as noted in Improve the perceived performance of data onboarding boxo#888 (comment)
• we want Kubo to have an option to avoid doing disk writes when provide system works
  • (idea 1) we could ensure provider queue is persisted under deterministic queue
    • this would allow user to control where provide queue is stored, for example, user could mount in-memory datastore under something like /provides – similar to how flatfs is mounted for `/blocks
  • (idea 2) Reprovider.QueuePersistence Flag that allows user to control if queue is persisted in datastore, or not (prioritizing performance at the cost or slight risk in case of power outage and increased memory usage)