Polish the edgecloud structure

# Mocked API for testing purposes

from typing import Dict, List, Optional

from edgecloud.core.edgecloud_interface import EdgeCloudManagementInterface

class EdgeApplicationManager(EdgeCloudManagementInterface):

    def onboard_app(self, app_manifest: Dict) -> Dict:

        print(f"Submitting application: {app_manifest}")

        return {"appId": "1234-5678"}

    def get_all_onboarded_apps(self) -> List[Dict]:

        return [{"appId": "1234-5678", "name": "TestApp"}]

    def get_onboarded_app(self, app_id: str) -> Dict:

        return {"appId": app_id, "name": "TestApp"}

    def delete_onboarded_app(self, app_id: str) -> None:

        print(f"Deleting application: {app_id}")

    def deploy_app(self, app_id: str, app_zones: List[Dict]) -> Dict:

        return {"appInstanceId": "abcd-efgh"}

    def get_all_deployed_apps(self, app_id: Optional[str] = None, app_instance_id: Optional[str] = None, region: Optional[str] = None) -> List[Dict]:

        return [{"appInstanceId": "abcd-efgh", "status": "ready"}]

    def undeploy_app(self, app_instance_id: str) -> None:

        print(f"Deleting app instance: {app_instance_id}")

    def get_edge_cloud_zones(self, region: Optional[str] = None, status: Optional[str] = None) -> List[Dict]:

        return [{"edgeCloudZoneId": "zone-1", "status": "active"}]