OHIF-79: Study Browser side panel (#1614)

* Initial code changes for StudyBrowser

* StudyItem component basic strucure

* Adding new icon

* Updates to get StudyItem working

* Small fix on side panel open header

* Adding new icons

* Thumbnail List

* ThumbnailSR WIP

* Thumanil WIP

* Export new components into ohif/ui

* Updates on style

* Update ThumbnailSR style

* Margin updates

* MAke it scrollable

* Make it scrollable

* Style updates

* Fixing tooltip

* Tunning the mock data and testing scenarios

* Update mock data

* make all studies collapsed

* small fix on tooltip

* Removing empty mdx files

* Updating viewer docz page

* Style updates

* Update button font-size

* Fix: Make cancel button only visible on hover

* Fixing callouts

* Fix eslint

platform/ui/index.js

@@ -30,6 +30,8 @@ export {
   Select,
   SegmentationTable,
   SidePanel,
+  StudyBrowser,
+  StudyItem,
   StudyListExpandedRow,
   StudyListPagination,
   StudyListTable,
@@ -40,6 +42,9 @@ export {
   TableHead,
   TableRow,
   ThemeWrapper,
+  Thumbnail,
+  ThumbnailSR,
+  ThumbnailList,
   Typography,
 } from './src/components';