Reduce adapter memory consumption

[Tharsanan1]

The current version of the adapter uses an in-memory ODS, which stores the API, rate limit, API policy, etc., to determine whether a reconcile event should be processed. Ideally, we should use status.observedGeneration and metadata.generation to decide if a reconcile event should proceed. Removing the ODS could help save CPU resources as well.

We might need to maintain a local cache to store the processed CR by caching the name and namespace. This cache would handle adapter restarts where status.observedGeneration equals metadata.generation. In the event of adapter restart, it should reconcile all the APIs regardless of the status.observedGeneration and metadata.generation.