Issue Type: Feature Request

When closing a tab, switch to the right tab and not the left one. This was you can close all tabs on the right, by keeping all what's required on the left. And yes, i know that there is an option to close all tabs on the right, but it's easier to use keyboard ctrl+w

VS Code version: Code 1.30.2 (61122f8, 2019-01-07T22:49:48.319Z)
OS version: Linux x64 4.15.0-43-generic