Rename exported Embed to ReplayWebPage, and export EmbedReplayEvent type (#384)

Closes #376

src/index.ts

@@ -41,10 +41,16 @@ export {
   Replay,
   Sorter,
   URLResources,
+  /**
+   * @deprecated use {@linkcode ReplayWebPage}
+   */
   Embed,
+  Embed as ReplayWebPage,
   SWManager,
 };
 
 export type { ItemType, URLResource } from "./types";
 
+export type { EmbedReplayEvent } from "./item";
+
 export * from "./misc";