init python support

extension/src/VisualizationBackend/index.ts

@@ -2,5 +2,6 @@ export * from "./VisualizationBackend";
 
 export { ComposedVisualizationSupport } from "./ComposedVisualizationSupport";
 export { JsEvaluationEngine } from "./JsVisualizationSupport";
+export { PyEvaluationEngine } from "./PyVisualizationSupport";
 export { GenericVisualizationSupport } from "./GenericVisualizationSupport";
 export { ConfigurableVisualizationSupport } from "./ConfigurableVisualizationSupport";