Improve import alias

@file/ and @export/ instead of file/ and export/ etc

src/export/packer/image-replacer.spec.ts

@@ -1,6 +1,6 @@
 import { expect } from "chai";
 
-import { Media } from "file";
+import { Media } from "@file/media";
 
 import { ImageReplacer } from "./image-replacer";