Integrate drag and drop api (#16500)

* Initial implementation of drag and drop api (#122239)

* Add drag and drop controller (#123542)

* Tree data transfer dnd (#128666)

* add drop method to sql files

Co-authored-by: Alex Ross <alros@microsoft.com>

extensions/notebook/src/test/common/stubs.ts

@@ -10,6 +10,7 @@ export interface ExtensionGlobalMemento extends vscode.Memento {
 }
 
 export class MockExtensionContext implements vscode.ExtensionContext {
+	extensionRuntime = 1;
 	logger: undefined;
 	logPath: './';
 	subscriptions: { dispose(): any; }[];