Use registry server to find all feature views updated since timestamp

**Is your feature request related to a problem? Please describe.**
Need to be able to use registry server to find all added or updated feature views since timestamp. This is to support getting diffs of feature registry.

**Describe the solution you'd like**
Want to add new filtering parameter on registry server that allows to search by last updated timestamp.

**Describe alternatives you've considered**
Currently, you can get a diff using S3 or file based feature registry but SQL based feature registry is more scalable and ACID compliant.