Merge pull request #55 from Rutherther/feat/contracts

Add contract system

feat(game): split nostale apis into safe, unsafe, add contracts usage

feat(game): make item dropped event contain ground item

feat(core): add default states and no errors enum

feat(core): add contract builder

feat(game): add event constraint for IEveryGameResponder Respond

feat(game): add timeouts to contracts

feat(core): add contract builder outline

feat(game): add every game event responder

feat(core): add basics of a contract system

fix(game): make current partner and pet null if pinit does not contain them

chore: use specific errors instead of GenericError

chore: add async analyzer and meet its standards

fix(game): respect family sub packet nullability

chore: update versions

fix(game): parse null inv sub packets correctly

chore: update versions

Merge branch 'main' of github.com:Rutherther/NosSmooth

Merge pull request #52 from Rutherther/feat/optional-wrapper

Add optional wrapper

docs: add not in range, nullable wrapper docs