Command browser.executeWorkbench doesn't allow to pass in more params

[christian-bromann]

The executeWorkbench does not allow to have additional parameters, I'ld suggest to change it to the following:

executeWorkbench: <T>(fn: (vscode: any, ...params: any[]) => T) => Promise<T>;
executeWorkbench: <T>(fn: (vscode: any, ...params: any[]) => T, ...params: any[]) => Promise<T>;

Additional points if the types added to the command are propagated to the callback function.