Enhances i2Edge adapter for app instance retrieval

Improves app instance information retrieval from i2Edge.

- Maps i2Edge deployment status to CAMARA status correctly.
- Extracts edge cloud zone ID from the application specification's node selector, rather than relying on a dedicated zone ID field.
- Implements dynamic fallback zone retrieval if the app instance is not found in the initial instances list by querying available zones from i2Edge.
- Uses "unknown" and "Unknown_Provider" as safer defaults when instance data is unavailable.
- Enables `AppId` and `AppInstanceId` to accept strings to comply with current i2Edge limitations.