Add helpers4 Local Mounts feature

Author: baxyz

_data/collection-index.yml

@@ -1266,6 +1266,11 @@
   contact: https://github.com/helpers4/devcontainer/issues
   repository: https://github.com/helpers4/devcontainer/tree/main/src/angular-dev
   ociReference: ghcr.io/helpers4/devcontainer/angular-dev
+- name: Local Mounts
+  maintainer: baxyz
+  contact: https://github.com/helpers4/devcontainer/issues
+  repository: https://github.com/helpers4/devcontainer/tree/main/src/local-mounts
+  ociReference: ghcr.io/helpers4/devcontainer/local-mounts
 - name: Biome Feature
   maintainer: baxyz
   contact: https://github.com/baxyz/devcontainer-features/issues