add devcontainer template from irfansofyana

Author: irfansofyana

_data/collection-index.yml

@@ -967,3 +967,8 @@
   contact: https://github.com/irfansofyana/devcontainer-features/issues
   repository: https://github.com/irfansofyana/devcontainer-features
   ociReference: ghcr.io/irfansofyana/devcontainer-features
+- name: devcontainer templates by irfansofyana
+  maintainer: irfansofyana
+  repository: https://github.com/irfansofyana/devcontainers-templates
+  contact: https://github.com/irfansofyana/devcontainers-templates/issues
+  ociReference: ghcr.io/irfansofyana/devcontainers-templates