chore: add async analyzer and meet its standards

fix(game): respect family sub packet nullability

fix(game): parse null inv sub packets correctly

Merge pull request #47 from Rutherther/feat/pass-nullable

Pass CanBeNull to string serializer and converter

feat(packets): update packets to not use nullable if not needed

Merge pull request #46 from Rutherther/feat/act4

Add Act4 status processing

feat(game): emit Act4StatusReceived event upon receiving act4 info

Resolves #43

Merge pull request #45 from Rutherther/feat/mates

Add support for mates

fix(packets): correctly represent finfo

fix(packets): make nullable wrapper a class

feat(game): add mates processing

feat(game): add revive handling

feat(game): add friends processing

feat(game): add group processing

feat(game): add (basic) inventory parsing

feat(game): put friends, group, inventory, skills in Game instead of Character

chore: make updates to get rid of warnings

feat(packets): add many new packets

feat(game): handle null skill vnum in su packet responder

fix(game): create character on at packet received