fix(apiclient): Implemented IService interface in Service class and improved secret bundle documentation.

ts_interfaces/data/secretbundle.ts

@@ -7,6 +7,17 @@ export interface ISecretBundle {
     /**
      * determines if the secret is a service or an external secret
      * if external secret additional checks are put in place to protect the secret
+     * 
+     * * service:  
+     *   the bundle belongs to a service and can only be used by that service
+     * * npmci:  
+     *   the bundle is a secret bundle that is used by an npmci pipeline
+     *   production secrets will be omitted in any case
+     * * gitzone:  
+     *   the bundle is a secret bundle that is used by a gitzone.
+     *   Only local environment variables are allowed
+     * * external:  
+     *   the bundle is a secret bundle that is used by an external service
      */
     type: 'service' | 'npmci' | 'gitzone' | 'external';