noVNC and deps

So that we can host a web based VNC client on dev and test boards. Then
people can get vnc access with no setup.

BUG=b:208727066
TEST=CQ
emerge-$DUT websockify novnc
cros deploy --root=/usr/local ${DUT} novnc websockify

Change-Id: I99ead5b4a857f2d143e70fabd8fc09918f1ac16d
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/portage-stable/+/3428432
Reviewed-by: Mike Frysinger <vapier@chromium.org>
Commit-Queue: Eric Lok <lokeric@google.com>
Tested-by: Eric Lok <lokeric@google.com>
12 files changed