Add Devcontainer Features by nkdui to collection index

Author: nkdui

_data/collection-index.yml

@@ -1461,3 +1461,8 @@
   contact: https://github.com/althack/devcontainers/issues
   repository: https://github.com/althack/devcontainers
   ociReference: ghcr.io/althack/devcontainers
+- name: Devcontainer Features by nkdui
+  maintainer: nkdui
+  contact: https://github.com/nkdui/devcontainer-features/issues
+  repository: https://github.com/nkdui/devcontainer-features
+  ociReference: ghcr.io/nkdui/devcontainer-features