fix: update DICOMSR and Measurement Panel copy to use L/W (#2174)

* fix: update DICOMSR and Measurement Panel copy to use L/W

* functional viewport

* support the active viewport for snapshot

* Support empty viewport case

* bump cs-tools to pick up misc. fixes

platform/core/package.json

@@ -31,7 +31,7 @@
   },
   "peerDependencies": {
     "cornerstone-core": "^2.3.0",
-    "cornerstone-tools": "4.20.1",
+    "cornerstone-tools": "5.1.2",
     "cornerstone-wado-image-loader": "^3.1.2",
     "dicom-parser": "^1.8.3"
   },