Add Endpoint for models - 'storage_links'

[sambles]

Issue Description

Needed for a vendor UI, they want cache model settings and need to know if the file has changed.

Amir: The solution I have in mind is that we look at the hash of the file and if it’s changed we update our cache. But this only works well as long as you store model settings on s3 so we can read the etag on it. If it’s some local storage that doesn’t have the hash readily stored as meta data, this won’t work because we have to get the file and calculate the hash which defeats the purpose.