feat: DicomTagBrowser tool (#2975)

* init bring v2 tag browser to v3, some small bug fixes

* moved tag browser to default extension, altered style to be more OHIF-v3-like

Co-authored-by: Michael Andersen <Michael.Andersen@rmp.uhn.ca>

platform/viewer/pluginConfig.json

@@ -45,4 +45,4 @@
   ],
   "modesFactory": [],
   "umd": []
-}
+}