begin implementing mechanism of declaring 'Plant' (e.g., digital watch, microwave oven) to simulate a plant interactively

src/Plant/Plant.ts

@@ -0,0 +1,11 @@
+import { EventTrigger } from "@/statecharts/label_ast";
+import { RaisedEvent } from "@/statecharts/runtime_types";
+import { ReactElement } from "react";
+
+export type Plant<StateType> = {
+  inputEvents: EventTrigger[];
+  outputEvents: EventTrigger[];
+
+  reducer: (inputEvent: RaisedEvent, state: StateType) => StateType;
+  render: (state: StateType) => ReactElement;
+}