feat: extension panels

* Snapshot -- Switching branches
* fix classes and hooks for panel componet
* Restore button functionality
* feat: support for expandableToolMenu
* Shift cornerstoneTools config up a layer, and use globalToolSync
* Remaining initCornerstoneTools changes
* Pull in Segmentation Plugin
* Shift MeasurementsPanel to an extension
* Note regarding where data is coming from
* Make sure measurement callback is available
* Bump core version
* Shift MeasurementsTable to a local extensions directory
* Register appCommands as an extension
* Update package dependencies and yarn lock
* Support for panel width
* Ability to pass props to our panel component
* Add a safety check around calling our tacked on method for tool options
* Left sidebar plugins + fix activeIndex prop passed to sidebar.
* fix: viewer height
Now in a shared container w/ top bar, so we need to factor that in when calculating height
* lock file latest
* Update thumbnails if studies has changes
* bump cornerstone version to resolve globalToolSynch history issue
* Default panel to open; studies optional
* Bump minor version for ohif-cornestone-extension
* Simplify button logic
* Accommodate odd roundedButtonGroup value change emit
* Map viewers + selectedViewport instead of pulling off the window

src/appExtensions/GenericViewerCommands/commandsModule.js

@@ -0,0 +1,39 @@
+import { redux } from 'ohif-core';
+import store from './../../store';
+const { setViewportActive } = redux.actions;
+
+const actions = {
+  updateViewportDisplaySet: ({ direction }) => {
+    // TODO
+    // console.warn('updateDisplaySet: ', direction);
+  },
+  updateActiveViewport: ({ viewports, direction }) => {
+    const { viewportSpecificData, activeViewportIndex } = viewports;
+    const maxIndex = Object.keys(viewportSpecificData).length - 1;
+
+    let newIndex = activeViewportIndex + direction;
+    newIndex = newIndex > maxIndex ? 0 : newIndex;
+    newIndex = newIndex < 0 ? maxIndex : newIndex;
+
+    store.dispatch(setViewportActive(newIndex));
+  },
+};
+
+const definitions = {
+  // Next/Previous active viewport
+  incrementActiveViewport: {
+    commandFn: actions.updateActiveViewport,
+    storeContexts: ['viewports'],
+    options: { direction: 1 },
+  },
+  decrementActiveViewport: {
+    commandFn: actions.updateActiveViewport,
+    storeContexts: ['viewports'],
+    options: { direction: -1 },
+  },
+};
+
+export default {
+  definitions,
+  defaultContext: 'VIEWER',
+};