In Memory Registry

[franciscojavierarceo]

Is your feature request related to a problem? Please describe.
We would benefit from implementing an in memory registry so that if Feast users choose to rely on a full deployment to enable new feature views, the can use it.

Describe the solution you'd like
Registry purely based on code and no database lookup.

Describe alternatives you've considered
N/A

Additional context
N/A

[tokoko]

Can you elaborate on the use case here? Is it only supposed to be used for local development? Also, how would this differ from using for example a file-based registry that has caching enabled (without ttl)? Isn't that essentially the same thing already?