feat: Object store persistence in operator

[dmartinol]

What this PR does / why we need it:

This PR adds object store persistence configuration options to the FeatureStore CRD.

• Support is provided only to the Registry service.
• Additional S3 configurations are also supported
• Follows definitions in RFC #42
• Configuration examples are provided in config/samples

apiVersion: feast.dev/v1alpha1
kind: FeatureStore
metadata:
  name: sample-s3-registry
spec:
  feastProject: my_project
  services:
    onlineStore:
      persistence:
        file:
          path: /data/online_store.db
    offlineStore:
      persistence:
        file:
          type: dask
    registry:
      local:
        persistence:
          file:
            path: s3://bucket/registry.db
            s3_additional_kwargs:
              ServerSideEncryption: AES256
              ACL: bucket-owner-full-control
              CacheControl: max-age=3600

Which issue(s) this PR fixes:

Relates to #4561

[dmartinol]

@tchughesiv @redhatHameed FYI

[redhatHameed]

lgtm

[lokeshrangineni]

this has been reassigned in the deep copy using make. Do we need to initialize with empty map?

[dmartinol]

this file is generated by make generate, I assume it is corrrect 😉

[tchughesiv]

lgtm