perf(memory): add 16 bit texture via configuration - reduces memory by half (#3662)

Co-authored-by: Ouwen Huang <ouwen.huang@duke.edu>

extensions/cornerstone/src/initWADOImageLoader.js

@@ -49,6 +49,7 @@ export default function initWADOImageLoader(
       // Until the default is set to true (which is the case for cornerstone3D),
       // we should set this flag to false.
       convertFloatPixelDataToInt: false,
+      use16BitDataType: Boolean(appConfig.use16BitDataType),
     },
     beforeSend: function (xhr) {
       //TODO should be removed in the future and request emitted by DicomWebDataSource