feat: New dialog service (#1202)

* Add dialog provider boilerplate and improve provider imports

* Add react-draggable dependency

* Add dialog service boilerplate

* Refactor modal to use react-modal and remove dependency on modal themed styles

* Update cinedialog to use new dialog provider

* Add multiple dialogs and refactor provider (dialogs)

* Set app root (modal)

* Add modal zindex bigger than tooltip

* Block drag on buttons/svgs/paths/input and improve jsdoc

* Use guid util to generate dialog ids

* Explicit props in dialog provider

* Improve jsdocs

* Fix tests broken

* Fix boundaries calculation

* Remember last dialog position

* Update providers location

* Add scroll to modal

* Add toggable button toolbar and fix css modal

platform/viewer/cypress/integration/common/OHIFStudyViewer.spec.js

@@ -273,7 +273,7 @@ describe('OHIF Study Viewer Page', function() {
     cy.get('[data-cy="about-item-menu"]')
       .first()
       .click();
-    cy.get('.modal-content')
+    cy.get('[data-cy="about-modal"]')
       .as('aboutOverlay')
       .should('be.visible');
 
@@ -296,7 +296,7 @@ describe('OHIF Study Viewer Page', function() {
     cy.percyCanvasSnapshot('About modal - Should display modal');
 
     //close modal
-    cy.get('.close').click();
+    cy.get('[data-cy="close-button"]').click();
     cy.get('@aboutOverlay').should('not.be.enabled');
   });
 });