Implement Operation ujsx component with props and leaf node behavior

src/component/index.ts

@@ -1,3 +1,5 @@
+export { Operation } from "./operation.js";
+export type { OperationProps } from "./operation.js";
 export { Parallel } from "./parallel.js";
 export type { ParallelProps } from "./parallel.js";
 export { Sequential } from "./sequential.js";