Support for additional "tracking" mode

platform/viewer/package.json

@@ -58,8 +58,10 @@
     "@ohif/extension-dicom-microscopy": "^0.50.6",
     "@ohif/extension-dicom-pdf": "^1.0.1",
     "@ohif/extension-lesion-tracker": "^0.2.0",
+    "@ohif/extension-measurement-tracking": "^0.0.1",
     "@ohif/extension-vtk": "^1.5.6",
     "@ohif/i18n": "^0.52.8",
+    "@ohif/mode-longitudinal": "^0.0.1",
     "@ohif/ui": "^1.4.4",
     "@tanem/react-nprogress": "^1.1.25",
     "@types/react": "^16.0.0",