feat: Add a new hanging protocol @ohif/mn (#3305)

* feat: Add a new hanging protocol @ohif/mn

* Add @ohif/seg example

* PR comments and a couple more fixes to make things cleaner

* PR comment

* Added an example to cause the PR checks to rerun

extensions/test-extension/src/custom-context-menu/findingsContextMenu.ts

@@ -38,12 +38,12 @@ const findingsContextMenu = {
         },
 
         // The example below shows how to include a delegating sub-menu,
-        // Only available on the @ohif/hp-extension.mn hanging protocol
+        // Only available on the @ohif/mnGrid hanging protocol
         // To demonstrate, select the 3x1 layout from the protocol menu
         // and right click on a measurement.
         {
           label: 'IncludeSubMenu',
-          selector: ({ protocol }) => protocol?.id === '@ohif/hp-extension.mn',
+          selector: ({ protocol }) => protocol?.id === '@ohif/mnGrid',
           delegating: true,
           subMenu: 'orientationSelectionSubMenu',
         },