feat(game): make game stateful entity

feat(core): add stateful entities support

Supports injecting entities depending on the current nostale client.
Useful for remote, pipe client etc.

feat(packets): make position ushort

feat(core): add map changed walk unfinished reason

feat(core): add pre and post responder events

feat(core): add walk command error

chore: make file client non packable

Merge pull request #8 from Rutherther/game-objects

Game objects

chore(game): add nuget information

chore(packets): update version

chore(game): update project

feat(game): remove character died event in favor of entity died

feat(game): use entity stunned event instead of character stunned

feat(game): add character sp points

feat(packets): add sp point and cooldown packets

feat(packets): add miniland info and objects packets

feat(samples): add sample with loading data from a file

feat(game): add handling of packets for maps and entities

feat(game): add basic entity and map data

chore: add NosSmooth.Game to solution