Add ghcr.io/aqua/devcontainer-antigravity-cli

Author: Devin Carraway

_data/collection-index.yml

@@ -1501,3 +1501,7 @@
   contact: https://github.com/nkaaf/devcontainer-features/issues
   repository: https://github.com/nkaaf/devcontainer-features
   ociReference: ghcr.io/nkaaf/devcontainer-features
+- name: Antigravity CLI feature by aqua
+  maintainer: aqua
+  contact: https://github.com/aqua/devcontainer-antigravity-cli
+  ociReference: ghcr.io/aqua/devcontainer-antigravity-cli