Other players as real MSC characters

GameCharacter clones a MSC human (bodymesh + skeleton, no scripts, physics or
animation), puts it into its bind pose, aligns and scales it, and drives the
bones every frame from the joint points of the existing MSCO figure (hip,
knee, ankle, shoulder, elbow, hand, head pitch, torso lean) by rotating each
limb from its rest direction. Limb bones are picked geometrically, so bone
naming conventions do not matter. Variant per player id; console 'model
classic|game' switches, the MSCO figure is the automatic fallback.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

MSCO.csproj

@@ -106,6 +106,7 @@
     <Compile Include="NetSession.cs" />
     <Compile Include="ObjectSync.cs" />
     <Compile Include="Passenger.cs" />
+    <Compile Include="GameCharacter.cs" />
     <Compile Include="SaveSync.cs" />
     <Compile Include="ServerBrowser.cs" />
     <Compile Include="SteamLobby.cs" />