Add devcontainer-config features entry to collection index (#610)

Co-authored-by: Álvaro Rausell Guiard <33221237+AlvaroRausell@users.noreply.github.com>

Author: gdlol

_data/collection-index.yml

@@ -1270,6 +1270,11 @@
   contact: https://github.com/pairspaces/devcontainers/issues
   repository: https://github.com/pairspaces/devcontainers
   ociReference: ghcr.io/pairspaces/devcontainers/pairspaces
+- name: Devcontainer Features for Devcontainer Configurations
+  maintainer: devcontainer-config
+  contact: https://github.com/devcontainer-config/features/issues
+  repository: https://github.com/devcontainer-config/features
+  ociReference: ghcr.io/devcontainer-config/features
 - name: Assorted Features
   maintainer: Evit15
   contact: https://github.com/Evit15/devcontainer-features/issues