feat: add pluginRequestTimeout field to backend config

src/config/backend.ts

@@ -22,6 +22,13 @@ import {SCMonitoringConfiguration} from './monitoring';
  * A backend configuration
  */
 export interface SCBackendConfiguration {
+  /**
+   * The maximum amount of time (milliseconds) an external program can take to provide a response to the backend
+   *
+   * This can be used for example for Plugins.
+   */
+  externalRequestTimeout: number;
+
   /**
    * A list of hidden SC types
    *