docs: add devcontainer-features and devcontainer-templates from irfansofyana (#508)

* add irfansofyana devcontainer

* fix conflict

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Co-authored-by: Álvaro Rausell Guiard <33221237+AlvaroRausell@users.noreply.github.com>

Author: irfansofyana

_data/collection-index.yml

@@ -1029,6 +1029,16 @@
   contact: https://github.com/RouL/devcontainer-features/issues
   repository: https://github.com/RouL/devcontainer-features
   ociReference: ghcr.io/roul/devcontainer-features
+- name: devcontainer features by irfansofyana
+  maintainer: irfansofyana
+  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/devcontainer-templates
+  contact: https://github.com/irfansofyana/devcontainer-templates/issues
+  ociReference: ghcr.io/irfansofyana/devcontainer-templates
 - name: devcontainer templates by techiro
   maintainer: techiro
   contact: https://github.com/techiro/devcontainer-template/issues