feat: Study List Table - v2 (#1497)

* small fix in button hover

* exported icons

* feat: StudyList Table

* icons comment

* fix bottom spacing

* add gatsby plugin for svg import

* move mock file to ui

* replace component to import from ui

* move StudyList to platform/ui

* fix inner table bg color

* fix inner table border

* add custom flex values

* create custom class for custom scrollbar

* fix inner table

* update comment

* refactor for reusable classes

* update scrollbar name

* fix studyList export

* update scrollbar class

platform/viewer/src/connectedComponents/ConnectedStudyList.js

@@ -1,5 +1,5 @@
 import React from 'react';
-import StudyList from '../components/StudyList/StudyList';
+import { StudyList } from '@ohif/ui';
 
 const ConnectedStudyList = () => {
   return <StudyList />;