Add features to index (#583)

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

Author: olivierlemasle

_data/collection-index.yml

@@ -1082,6 +1082,11 @@
   contact: https://github.com/RyanLua/templates/issues
   repository: https://github.com/RyanLua/templates
   ociReference: ghcr.io/ryanlua/templates/roblox
+- name: olivierlemasle
+  maintainer: Olivier Lemasle
+  contact: https://github.com/olivierlemasle/devcontainers-features/issues
+  repository: https://github.com/olivierlemasle/devcontainers-features
+  ociReference: ghcr.io/olivierlemasle/devcontainers-features
 - name: BTP Dev Container Features
   maintainer: Navin Krishnan
   contact: https://github.com/navinkrishnan/devcontainer-features-btp/issues