Add tarballProxyEndpoints workbench option (microsoft#138283)

Author: joyceerhl

src/vs/workbench/workbench.web.api.ts

@@ -412,6 +412,12 @@ interface IWorkbenchConstructionOptions {
 	 */
 	readonly codeExchangeProxyEndpoints?: { [providerId: string]: string }
 
+	/**
+	 * [TEMPORARY]: This will be removed soon.
+	 * Endpoints to be used for proxying repository tarball download calls in the browser.
+	 */
+	readonly _tarballProxyEndpoints?: { [providerId: string]: string }
+
 	//#endregion
 
 
@@ -674,6 +680,8 @@ function create(domElement: HTMLElement, options: IWorkbenchConstructionOptions)
 		}
 	}
 
+	CommandsRegistry.registerCommand('_workbench.getTarballProxyEndpoints', () => (options._tarballProxyEndpoints ?? {}));
+
 	// Startup workbench and resolve waiters
 	let instantiatedWorkbench: IWorkbench | undefined = undefined;
 	main(domElement, options).then(workbench => {