Implement KVM in webui

This patchset adds the infrastructure to allow KVM sessions
through the webui. A websocket capable VNC/RFB connection
on the BMC is needed for KVM sessions.

To access, navigate to Server control -> KVM.

Tested: Ran obmc-ikvm on the BMC, added a KVM Handler to
        Phosphor Rest Server, and was able to establish a
        KVM session in the webui on a Witherspoon.
Change-Id: I7dda5bec41d270ae8d0913697714d4df4ec3a257
Signed-off-by: Ed Tanous <ed.tanous@intel.com>
Signed-off-by: Gunnar Mills <gmills@us.ibm.com>
diff --git a/package-lock.json b/package-lock.json
index 61e9787..1f39256 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -807,6 +807,11 @@
         "to-fast-properties": "2.0.0"
       }
     },
+    "@novnc/novnc": {
+      "version": "1.0.0",
+      "resolved": "https://registry.npmjs.org/@novnc/novnc/-/novnc-1.0.0.tgz",
+      "integrity": "sha1-drDonm+HOMqBVBlbr1uOaoC8kQU="
+    },
     "@types/node": {
       "version": "10.12.18",
       "resolved": "https://registry.npmjs.org/@types/node/-/node-10.12.18.tgz",