Fixes #309, removes responsibility from CoreManager to track peer-have
messages - will be handled by SyncState class

This combines all core sync states for a namespace. It listens to
CoreManager for new cores and pre-have messages.

* main:
  chore: remove ipc wrapper implementation (#306)
  fix: fix DataType.getByDocId implementation to match type definition (#317)
  chore: Add CI release workflow (#300)
  Feat: Icon data type (#304)
  chore: emit peer-have messages, don't persist them (#310)

* feat/pre-have-namespace:
  feat: add namespace to peer pre-have messages

* main:
  chore: update github action steps (#322)
  fix: fix mdns discovery (finally) (#323)
  chore: check npm lockfile version does not change (#321)
  chore: commit hooks for lint & package-lock chk (#320)
  feat: define sync capability per namespace (#319)
  feat: add namespace to peer pre-have messages (#314)

* main:
  feat: add capabilities.getAll() (#326)
  chore: gitignore .eslintcache (#327)

Since these are internal modules and we don't attach a "listener" other
than in the constructor, switching to a pattern that passes an
'onUpdate' constructor param, that avoids needing to track when event
listeners are removed