Kubernetes editor: create editor and integration for yaml-language-server

Given that there's a need to edit kubernetes/openshift json/yaml such an editor would be very helpful. We could easily create that by creating an editor that's based on lsp4e and integrating the yaml-language-server.

• The yaml-langauge server: https://github.com/redhat-developer/yaml-language-server
• Similar integration that's already been done for fabric8 analytics: https://github.com/fabric8-analytics/fabric8-analytics-devstudio-plugin