add gh tools

Author: anthony-nhs

.devcontainer/devcontainer.json

@@ -15,6 +15,7 @@
       "source=${env:HOME}${env:USERPROFILE}/.npmrc,target=/home/vscode/.npmrc,type=bind"
     ],
     "features": {
+      "ghcr.io/devcontainers/features/github-cli:1": {},
       "ghcr.io/devcontainers/features/docker-outside-of-docker:1": {
         "version": "latest",
         "moby": "true",