Add Grype feature (devcontainers#172)

* Add Grype feature

* update repo name

Author: dasiths

_data/collection-index.yml

@@ -333,3 +333,8 @@
   contact: https://github.com/jmuchovej/devcontainers/issues
   repository: https://github.com/jmuchovej/devcontainers
   ociReference: ghcr.io/jmuchovej/templates
+- name: Features by dasiths
+  maintainer: dasiths
+  contact: https://dasith.me
+  repository: https://github.com/dasiths/devcontainer-features
+  ociReference: ghcr.io/dasiths/devcontainer-features