image extension

As a hyper-connect user, id like the ability to use a hyper extension that performs the following:

- [ ] When an image is added to the storage service, an entry is added in the search service
- [ ] When an image is removed from the storage service, an entry is removed from the search service.
- [ ] When an image is updated, an entry is updated in the search service
- [ ] When an image is searched in the searched service and a search hit occurs, return the search information including a URL to the image within the storage service.

## References

https://github.com/hyper63/journal/blob/master/design-docs/001-hyper-connect-storage-and-queue.md#composition-what-would-be-some-extensions-for-queue-service

Start by reading the referenced storage-and-queue design document, then locate the existing storage, search, and extension entry points in the repository. The work is complete when image create, update, delete, and search-hit behavior keeps both services synchronized and returns the storage-service image URL.

Scritto dal modello di indicizzazione a partire dal testo della issue.