fix(seg): maintain algorithm name and algorithm type when DICOM seg is exported or downloaded (#4203)

extensions/cornerstone/src/services/SegmentationService/SegmentationServiceTypes.ts

@@ -22,6 +22,10 @@ type Segment = {
   isLocked: boolean;
   // display texts
   displayText?: string[];
+  // The name of algorithm used to generate the segment. (0062,0009)
+  algorithmName?: string;
+  // Type of algorithm used to generate the segment. 	(0062,0008)
+  algorithmType?: string;
 };
 
 type Segmentation = {