feat: various fixes for voyager/ucs01 for testnet

feat: clean up message types

wip

wip

fix(ucs01): ensure we use the source channel on ack/timeout

disable acks

buffer queue

defer sleep 1 sec not 3

add query latest height as destination

fix: testnet config

fix(ucs01): ensure non empty memo event

fix(testnet): config

add timeout message

add msgs endpoint, update sidecar, and maybe fix an issue with blocks not existing

properly configure hasura in voyager

/!\ not sure: fix trusted height on finality update

fix(voyager): fetch `next_sync_committee` from lc update

Signed-off-by: aeryz <abdullaheryz@protonmail.com>

fix(voyager): testnet config