refactor: update watchlist module imports for flattened package structure

internal/watchlist/module.go

@@ -2,21 +2,18 @@ package watchlist
 
 import (
 	"mal/internal/server"
-	"mal/internal/watchlist/handler"
-	"mal/internal/watchlist/repository"
-	"mal/internal/watchlist/service"
 
 	"go.uber.org/fx"
 )
 
 var Module = fx.Options(
 	fx.Provide(
-		repository.NewWatchlistRepository,
-		service.NewWatchlistService,
-		handler.NewWatchlistHandler,
+		NewWatchlistRepository,
+		NewWatchlistService,
+		NewWatchlistHandler,
 	),
 	fx.Provide(
-		server.AsRouteRegister(func(h *handler.WatchlistHandler) server.RouteRegister {
+		server.AsRouteRegister(func(h *WatchlistHandler) server.RouteRegister {
 			return h
 		}),
 	),