DAL: baker incentives (part 4: accuser)

Context and goal

That's the continuation of %DAL: baker incentives (part 3: protocol ready), whose goal is to make the feature complete in the protocol only.

The goal here is to make it complete in octez. This however does not include "observability" of the accuser.

(@eugenz, hours, !16184 (merged)) update get_attestable_slots RPC
(@phink, hours, ~~!16223 (closed)~~) For each attested L1 level l, retrieve the traps of the current slot monitored by the DAL node for level l - attestation_lag.
(@phink, hours, ~~!16223 (closed)~~) For each trap, retrieve the delegate associated slot shard together its proof. It should probably already be stored as the DAL node is an operator or an observer monitoring the slot.
(@phink, hours, ~~!16223 (closed)~~) Check if the delegate attested a slot where one of the slot's shards assigned to him is a trap.
(@Saroupille , hours, !16218 (merged) ) If the delegate attested a slot where one of the slot's shards assigned, inject an accusation.
(@phink, hours, !16281 (merged)). New accuser design (subsumes !16223 (closed)): register trap evidences on the fly (when receiving or producting the data): !16268 (merged)
(@phink, hours, !16281 (merged)). Make the DAL node accuser inject entrapment evidence for each trap in its cache.

(hours) new get_traps RPC (!16188 (closed))
(days) new monitor_traps RPC (#7683 (closed))
(days) attester DAL node detects accusations and does not attest anymore if needed