feat(metadata): added voiLUTFunction to MetadataProvider (#2959)

platform/core/src/classes/MetadataProvider.js

@@ -245,7 +245,7 @@ class MetadataProvider {
 
         break;
       case WADO_IMAGE_LOADER_TAGS.VOI_LUT_MODULE:
-        const { WindowCenter, WindowWidth } = instance;
+        const { WindowCenter, WindowWidth, VOILUTFunction } = instance;
         if (WindowCenter === undefined || WindowWidth === undefined) {
           return;
         }
@@ -259,6 +259,7 @@ class MetadataProvider {
         metadata = {
           windowCenter: toNumber(windowCenter),
           windowWidth: toNumber(windowWidth),
+          voiLUTFunction: VOILUTFunction,
         };
 
         break;