moved vector3 to common

- changed distance checks to distance squared
- reexported central thanalan navmesh with cell size 0.60, height 0.26, radius 0.5, edge error 1.3, merged region size 30
- todo: main logic loop per zone and move this into proper ai classes

FFXIVClassic Map Server/FFXIVClassic Map Server.csproj

@@ -340,6 +340,7 @@
     </EmbeddedResource>
   </ItemGroup>
   <ItemGroup>
+    <Folder Include="actors\chara\ai\" />
     <Folder Include="navmesh\" />
   </ItemGroup>
   <Import Project="$(MSBuildToolsPath)\Microsoft.CSharp.targets" />