Added atty303/devcontainer-features to collection-index.yml (#549)

Co-authored-by: Álvaro Rausell Guiard <[email protected]>

Author: atty303

_data/collection-index.yml

@@ -1042,6 +1042,11 @@
   contact: https://github.com/grafana/devcontainer-features/issues
   repository: https://github.com/grafana/devcontainer-features
   ociReference: ghcr.io/grafana/devcontainer-features
+- name: Dev Container Features by atty303
+  maintainer: atty303
+  contact: https://github.com/atty303/devcontainer-features/issues
+  repository: https://github.com/atty303/devcontainer-features
+  ociReference: ghcr.io/atty303/devcontainer-features
 - name: devcontainer features by MuhmdRaouf
   maintainer: Mohammed Abdel Raouf (MuhmdRaouf)
   contact: https://github.com/muhmdraouf/devcontainers-features/issues