chore: Export distortion editor components

- Export DistortionEditor component
- Export DistortionEditorProps, EditorState, EditMode types
- Export useDistortionEditor hook for external use

src/index.ts

@@ -2,6 +2,11 @@
 export { ImageDistortion } from './components/ImageDistortion';
 export type { ImageDistortionProps } from './components/ImageDistortion';
 
+// 에디터 (4점 사각형 + 정확한 UV 좌표계 원형 왜곡 가이드)
+export { DistortionEditor } from './editor';
+export type { DistortionEditorProps, EditorState, EditMode } from './editor';
+export { useDistortionEditor } from './editor';
+
 // 타입 정의
 export type {
   Point,