Add flyclt CLI feature to collection (devcontainers#411)

Author: GMkonan

_data/collection-index.yml

@@ -793,3 +793,8 @@
   contact: https://github.com/rafaph/devcontainer-features/issues
   repository: https://github.com/rafaph/devcontainer-features
   ociReference: ghcr.io/rafaph/devcontainer-features
+- name: GMkonan devcontainer features
+  maintainer: GMkonan
+  contact: https://github.com/GMkonan/fly-cli-feature/issues
+  repository: https://github.com/GMkonan/fly-cli-feature
+  ociReference: ghcr.io/gmkonan/fly-cli-feature