feat: add Dev Container assets by Yassine Doghri to collection index

Author: yassinedoghri

_data/collection-index.yml

@@ -1082,3 +1082,8 @@
   contact: https://github.com/RyanLua/templates/issues
   repository: https://github.com/RyanLua/templates
   ociReference: ghcr.io/ryanlua/templates/roblox
+- name: Dev Container assets by Yassine Doghri
+  maintainer: Yassine Doghri
+  contact: https://github.com/yassinedoghri/devcontainers/issues
+  repository: https://github.com/yassinedoghri/devcontainers
+  ociReference: ghcr.io/yassinedoghri/devcontainers