add scope to public getters (#1169)

packages/runtime/container-runtime/src/containerRuntime.ts

@@ -483,6 +483,10 @@ export class ContainerRuntime extends EventEmitter implements IHostRuntime, IRun
         return this._flushMode;
     }
 
+    public get scope(): IComponent {
+        return this.context.scope;
+    }
+
     public get IComponentRegistry(): IComponentRegistry {
         return this.registry;
     }

packages/runtime/runtime-definitions/src/components.ts

@@ -332,6 +332,7 @@ export interface IHostRuntime extends
     readonly submitSignalFn: (contents: any) => void;
     readonly snapshotFn: (message: string) => Promise<void>;
     readonly closeFn: () => void;
+    readonly scope: IComponent;
 
     /**
      * Returns the runtime of the component.