Collect batch fees into the builder wallet

[Mirko-von-Leipzig]

Spawns a separate task on the sequencer that periodically consumes p2id notes into the batch builder's wallet account.

Uses the database API to find unconsumed notes. For simplicity, each transaction is considered independent i.e. state is loaded fresh on each attempt, this avoids complex tracking of state.

This uses the expiration block height to guarantee that there is at most a single transaction in flight, and it waits pessimistically for this transaction to expire even if it has since been committed or dropped. This keeps things simple, and under the "good" flow has no downside since we are only attempted this every five or so minutes - long after this expiration has expired.

Part of #2501.

Changelog

[[entry]]
scope       = "node"
impact      = "added"
description = "Periodically collect batch-building fee notes into the public builder wallet."

[Mirko-von-Leipzig]

This will be a separate dApp service, not required yet.