Fix scripting bindings codegen for SoftTypeReference and SceneReference

#2761

Source/Engine/Scripting/SoftTypeReference.cs

@@ -38,6 +38,16 @@ namespace FlaxEngine
             _typeName = typeName;
         }
 
+        /// <summary>
+        /// Implicit cast operator from type name to string.
+        /// </summary>
+        /// <param name="s">The soft type reference.</param>
+        /// <returns>The type name.</returns>
+        public static implicit operator string(SoftTypeReference s)
+        {
+            return s._typeName;
+        }
+
         /// <summary>
         /// Gets the soft type reference from full name.
         /// </summary>

Source/Engine/Scripting/SoftTypeReference.h

@@ -12,7 +12,7 @@
 /// The soft reference to the scripting type contained in the scripting assembly.
 /// </summary>
 template<typename T = ScriptingObject>
-API_STRUCT(InBuild) struct SoftTypeReference
+API_STRUCT(InBuild, MarshalAs=StringAnsi) struct SoftTypeReference
 {
 protected:
     StringAnsi _typeName;
@@ -64,7 +64,7 @@ public:
         return *this;
     }
 
-    FORCE_INLINE SoftTypeReference& operator=(const StringAnsiView& s)
+    FORCE_INLINE SoftTypeReference& operator=(const StringAnsiView& s) noexcept
     {
         _typeName = s;
         return *this;
@@ -95,6 +95,16 @@ public:
         return _typeName.HasChars();
     }
 
+    operator StringAnsi() const
+    {
+        return _typeName;
+    }
+
+    String ToString() const
+    {
+        return _typeName.ToString();
+    }
+
 public:
     // Gets the type full name (eg. FlaxEngine.Actor).
     StringAnsiView GetTypeName() const