feat(core): split raw client and managed client as well as packet handlers

Resolves #65

feat(combat): add possibility to cancel operation to quit the combat state early

feat(combat): make waiting return an error with information about waiting information

docs: add missing documentation

Merge pull request #60 from Rutherther/feat/combat-v1

Make combat nonblocking, make multiple queues for distinct operations

fix(combat): prevent quitting before an operation is finished

chore(combat): remove unused code

feat(combat): update operations to be non-blocking, add support for handling waiting

chore: make updates to get rid of warnings

Merge pull request #32 from Rutherther/combat

Add combat extension

fix(combat): cancel combat when cancellation token is cancelled

fix(combat): reset attack command if new target is different

fix(combat): make skill cancellation tokens actions async

feat(combat): use attack command in combat manager

feat(combat): add combat manager