Enabling FBX Integration

• Install FBX Exporter 2.0.1 or newer via Package Manager.
• Add the following dependencies to Unity.ProBuilder.AddOns.Editor.asmdef in the "references" array:
  • "Autodesk.Fbx"
  • "Unity.Formats.Fbx.Editor"
• Open Project Settings and add PROBUILDER_FBX_2_0_1_OR_NEWER to the Scripting Define Symbols field.