Merge pull request #51 from Rutherther/feat/easy-api

Add easy apis for various things

feat(packets): represent pet skill packet correctly, last parameters are map x, map y

feat(packets): add use partner skill packet

Merge pull request #45 from Rutherther/feat/mates

Add support for mates

feat(game): add mates processing

feat(packets): add many new packets

fix(packets): correctly use cast id instead of vnum in UseSkill packet

Merge pull request #8 from Rutherther/game-objects

Game objects

fix: implement IPacket in use skill packets

feat: split packets definitions into separate assembly