devcontainer: add github-cli

.devcontainer/devcontainer.json

@@ -10,7 +10,8 @@
 
   // Features to add to the dev container. More info: https://containers.dev/features.
   "features": {
-    "ghcr.io/wxw-matt/devcontainer-features/command_runner:0": {}
+    "ghcr.io/wxw-matt/devcontainer-features/command_runner:0": {},
+    "ghcr.io/devcontainers/features/github-cli:1": {}
   },
 
   // Use 'forwardPorts' to make a list of ports inside the container available locally.