This includes:
- mixnet contract cache
- described nodes cache
- nodes annotations cache (performance)
those changes include taking some code developed for the purposes of #6277
* announce KEM key hashes and use generated value within LpStateMachine
* added digest of remote KEM key into LpSession
* changed constructor to LpSession to take explicit key materials for local and remote
this makes it easier to change keys required by each party without having to change all the interfaces everywhere again
* extended the changes to LpStateMachine constructor
* modify the interface to LpRegistrationHandler and LpListener
* gateway probe fixes
* temp nym-lp-client fixes
* review nits
* remove network test
* introduced v2/nym-nodes/described endpoint for returning nodes description alongside LP data
* missed V1 -> V2 description replacements
* removed deprecated call within mix-fetch
* use old v1 call in network stats
* wip
* wip: wrap node's sphinx key with a manager
* wip: choosing correct key for packet processing
* further propagation of key rotation information
* attaching key rotation information to reply surbs
* added basic key rotation information to mixnet contract
* wip: introducing cached queries for key rotation info from nym api
* unified nym-api contract cache refreshing
* finish packet decoding
* multi api client + retrieving rotation id
* rotating sphinx key files
* logic for migrating config file
* wip: putting new sphinx keys to self described endpoints
* processing loop of KeyRotationController
* fixed sphinx key loading
* rotating bloomfilters
* wired up KeyRotationController
* flushing bloomfilters to disk and loading
* most of nym-node changes
* post rebase fixes
* fixes due to backwards compatible hostkeys
* split http state.rs file
* dont use deprecated fields
* fixed backwards compatible deserialisation of host information
* split up node describe cache
* added a dedicated CacheRefresher listener to perform full refresh outside the set interval
* controlling announced sphinx keys within nym-api
* retrieving rotation id when pulling topology
* split nym-nodes http handlers
* v2 nym-api endpoints to retrieve nodes with additional metadata information
* bug fixes...
* additional bugfixes and guards against stuck epoch
* testnet manager: set first nym-api as the rewarder
* fixed host information deserialisation
* fixed panic during first key rotation
* post rebase fixes
* clippy
* more guards against stuck epochs
* added helper method to reset node's sphinx key
* instantiate mixnet contract with custom key rotation validity
* additional bugfixes and debugging nym-api deadlock
* passing shutdown to nym apis client
* remove dead test
* post rebasing fixes
* missing MixnetQueryClient variants
* remove usage of deprecated methods in sdk example
* fix: incorrect method signature
* post rebasing fixes
* attempt to retrieve key rotation id before doing any config migration work
* ignore tests relying on networking behaviour
* allow networking failures in certain tests