Add lit-html extension to recommended VS Code extensions
Add lit-html extension to recommended VS Code extensions

R=993fcadce4d04090da2fefd557a0995e7966c8d5@chromium.org

Bug: none
Change-Id: I751244f0bed9301ec046ac4aa5b4bdf54c082fa5
Reviewed-on: https://chromium-review.googlesource.com/c/devtools/devtools-frontend/+/2917092
Auto-Submit: Tim van der Lippe <dba8716ee7f8d16236046f74d2167cb94410f6ed@chromium.org>
Reviewed-by: Jack Franklin <993fcadce4d04090da2fefd557a0995e7966c8d5@chromium.org>
Commit-Queue: Tim van der Lippe <dba8716ee7f8d16236046f74d2167cb94410f6ed@chromium.org>

ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend,ChromeDevTools/devtools-frontend