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 Common Class Lib/FFXIVClassic Common Class Lib.csproj

@@ -70,6 +70,7 @@
     <Compile Include="STA_INIFile.cs" />
     <Compile Include="SubPacket.cs" />
     <Compile Include="Utils.cs" />
+    <Compile Include="Vector3.cs" />
   </ItemGroup>
   <ItemGroup>
     <None Include="app.config" />