fix. Launcher 타입 공통으로 분리

layers/components/atoms/Button/Launcher.vue

@@ -3,10 +3,9 @@ import type { CSSProperties } from 'vue'
 import type {
   DownloadButtonType,
   ButtonVariant,
+  Platform,
 } from '#layers/types/components/button'
 
-type Platform = 'google_play' | 'app_store' | 'pc' | 'stove'
-
 interface Props {
   platform: Platform
   type?: DownloadButtonType