test(improve-setup): sharding configuration, allow accessing cornerstone methods and events in tests, and add types (#4255)

tests/utils/reduce3DviewportSize.ts

@@ -0,0 +1,9 @@
+
+export const reduce3DViewportSize = async (page: any) => {
+  await page.evaluate(({ cornerstone }: AppTypes.Test) => {
+    const enabledElement = cornerstone.getEnabledElements().filter(element => element.viewport.type === 'volume3d')[0]
+    const { viewport } = enabledElement;
+    viewport.setZoom(0.5);
+    viewport.render()
+  }, await page.evaluateHandle('window'));
+}