UI: Add option to autosave scripts on focus change (#2565)

src/ScriptEditor/EditorData.ts

@@ -0,0 +1,9 @@
+// To avoid cyclic dependencies, this file should have as few imports as possible.
+
+import type { ContentFilePath } from "../Paths/ContentFile";
+import { EventEmitter } from "../utils/EventEmitter";
+import type { OpenScript } from "./ui/OpenScript";
+
+export const openScripts: OpenScript[] = [];
+
+export const EditorEvents = new EventEmitter<[hostname: string, filePath: ContentFilePath]>();