refactor: repartition server-side and client-side code

app/.client/components/editor/editors/index.ts

@@ -0,0 +1,5 @@
+export { DefaultEditor } from './DefaultEditor';
+export type { EditorProps } from './EditorProps';
+export { ImageEditor } from './ImageEditor';
+export { LinkEditor } from './LinkEditor';
+export { TextEditor } from './TextEditor';