Add Span<T> support for scripting fields

Source/Engine/Core/Types/Span.h

@@ -8,7 +8,7 @@
 /// Universal representation of a contiguous region of arbitrary memory.
 /// </summary>
 template<typename T>
-class Span
+API_CLASS(InBuild) class Span
 {
 protected:
     T* _data;

Source/Engine/Scripting/ManagedCLR/MUtils.h

@@ -499,8 +499,8 @@ namespace MUtils
     /// </summary>
     /// <param name="data">The native array object.</param>
     /// <returns>The output array pointer and size.</returns>
-    template<typename T>
-    FORCE_INLINE Span<T> ToSpan(const Array<T>& data)
+    template<typename T, typename AllocationType = HeapAllocation>
+    FORCE_INLINE Span<T> ToSpan(const Array<T, AllocationType>& data)
     {
         return Span<T>(data.Get(), data.Count());
     }