Uni-48851 autodesk fbx namespace (#421)

* update files to use new Autodesk.Fbx namespace
* update assembly names
* rename fbxsdk package to com.autodesk.fbx
* update package name in json

Author: vkovec

Assets/com.unity.formats.fbx.tests/CustomExtensionsTest.cs

@@ -5,7 +5,7 @@
 using UnityEngine;
 using NUnit.Framework;
 using UnityEditor.Formats.Fbx.Exporter.CustomExtensions;
-using UnityEngine.Formats.FbxSdk;
+using Autodesk.Fbx;
 
 namespace UnityEditor.Formats.Fbx.Exporter.UnitTests
 {

Assets/com.unity.formats.fbx.tests/DefaultSelectionTest.cs

@@ -1,7 +1,7 @@
 using UnityEngine;
 using NUnit.Framework;
 using System.Collections.Generic;
-using UnityEngine.Formats.FbxSdk;
+using Autodesk.Fbx;
 
 namespace UnityEditor.Formats.Fbx.Exporter.UnitTests
 {

Assets/com.unity.formats.fbx.tests/FbxExporterReflection.cs

@@ -3,7 +3,7 @@
 using System.Linq;
 using System.Collections.Generic;
 using System.Reflection;
-using UnityEngine.Formats.FbxSdk;
+using Autodesk.Fbx;
 using UnityEngine;
 
 namespace UnityEditor.Formats.Fbx.Exporter.UnitTests

Assets/com.unity.formats.fbx.tests/ModelExporterTest.cs

@@ -2,7 +2,7 @@
 using UnityEngine;
 using NUnit.Framework;
 using System.Collections.Generic;
-using UnityEngine.Formats.FbxSdk;
+using Autodesk.Fbx;
 using UnityEngine.Formats.Fbx.Exporter;
 
 namespace UnityEditor.Formats.Fbx.Exporter.UnitTests

Assets/com.unity.formats.fbx.tests/com.unity.formats.fbx.editortests.asmdef

@@ -2,7 +2,7 @@
     "name": "Unity.Formats.Fbx.Editortests",
     "references": [
         "Unity.Formats.Fbx.Editor",
-        "Unity.Formats.FbxSdk",
+        "Autodesk.Fbx",
         "Unity.Formats.Fbx.Runtime"
     ],
     "optionalUnityReferences": [