Add devcontainer features by iyaki to index

Author: iyaki

_data/collection-index.yml

@@ -1396,3 +1396,8 @@
   contact: https://github.com/LDlornd/uv-dev-container/issues
   repository: https://github.com/LDlornd/uv-dev-container
   ociReference: ghcr.io/LDlornd/uv-dev-container/lornd-uv
+- name: Devcontainer features by iyaki
+  maintainer: iyaki
+  contact: https://github.com/iyaki/devcontainer-features/issues
+  repository: https://github.com/iyaki/devcontainer-features
+  ociReference: ghcr.io/iyaki/devcontainer-features