Refactor useToast hook into modules

The useToast hook was refactored into smaller, more manageable modules.

src/hooks/toast/toastManager.ts

@@ -2,7 +2,11 @@
 import { Action, actionTypes } from './types'
 import { TOAST_LIMIT } from './constants'
 import { reducer } from './reducer'
-import { listeners, memoryState, lastAction } from './store'
+import { listeners } from './store'
+
+// 전역 상태 관리
+let memoryState = { toasts: [] };
+let lastAction = null;
 
 // ID 생성기
 let count = 0
@@ -49,3 +53,5 @@ export function dispatch(action: Action) {
     listener(memoryState)
   })
 }
+
+export { memoryState };