Feat/notebooks viewlet (#10170)

* clean up unsavedBooks to providedBooks

* added notebooks viewley contribution

* added notebookExporerAction context

* temp shortcut key B

* remove commenred code

* changes with master merge

* fix comments

* initial tests

* fix casing and description

* merged master and resolved errors

* remove extension point & add custom view container

* merge latest from master

* remove unused files

* move book images to common

* remove notebookExplorer contrib & move to notebook

* build fix

* remove explorer specific sryles from common

* vscode convention to define container actions

* rename notebooks/title

src/vs/workbench/browser/layout.ts

@@ -596,6 +596,10 @@ export abstract class Layout extends Disposable implements IWorkbenchLayoutServi
 						case 'remote':
 							viewletId = 'workbench.view.remote';
 							break;
+						// {{SQL CARBON EDIT}} add notebook view container to views
+						case 'notebooks':
+							viewletId = 'workbench.view.notebooks';
+							break;
 						default:
 							viewletId = `workbench.view.extension.${container.id}`;
 					}