feat: add file deduplication and hash checking for uploads

- Implemented SHA-256 hashing for uploaded files to enable deduplication.
- Added CheckHash method to verify if a file with the same hash already exists.
- Updated Upload method to reuse existing media assets if a duplicate is found.
- Introduced a new hash column in the media_assets table to store file hashes.
- Enhanced the upload process to include progress tracking and hash calculation.
- Modified frontend to check for existing files before uploading and to show upload progress.
- Added vuedraggable for drag-and-drop functionality in the content editing view.

backend/app/http/v1/routes.gen.go

@@ -54,6 +54,12 @@ func (r *Routes) Register(router fiber.Router) {
 	router.Get("/v1/common/options"[len(r.Path()):], DataFunc0(
 		r.common.GetOptions,
 	))
+	r.log.Debugf("Registering route: Get /v1/upload/check -> common.CheckHash")
+	router.Get("/v1/upload/check"[len(r.Path()):], DataFunc2(
+		r.common.CheckHash,
+		Local[*models.User]("__ctx_user"),
+		QueryParam[string]("hash"),
+	))
 	r.log.Debugf("Registering route: Post /v1/upload -> common.Upload")
 	router.Post("/v1/upload"[len(r.Path()):], DataFunc3(
 		r.common.Upload,
@@ -106,18 +112,18 @@ func (r *Routes) Register(router fiber.Router) {
 		Local[*models.User]("__ctx_user"),
 		QueryParam[string]("id"),
 	))
-	r.log.Debugf("Registering route: Get /v1/creator/contents/:id -> creator.GetContent")
-	router.Get("/v1/creator/contents/:id"[len(r.Path()):], DataFunc2(
-		r.creator.GetContent,
-		Local[*models.User]("__ctx_user"),
-		PathParam[string]("id"),
-	))
 	r.log.Debugf("Registering route: Get /v1/creator/contents -> creator.ListContents")
 	router.Get("/v1/creator/contents"[len(r.Path()):], DataFunc2(
 		r.creator.ListContents,
 		Local[*models.User]("__ctx_user"),
 		Query[dto.CreatorContentListFilter]("filter"),
 	))
+	r.log.Debugf("Registering route: Get /v1/creator/contents/:id -> creator.GetContent")
+	router.Get("/v1/creator/contents/:id"[len(r.Path()):], DataFunc2(
+		r.creator.GetContent,
+		Local[*models.User]("__ctx_user"),
+		PathParam[string]("id"),
+	))
 	r.log.Debugf("Registering route: Get /v1/creator/dashboard -> creator.Dashboard")
 	router.Get("/v1/creator/dashboard"[len(r.Path()):], DataFunc1(
 		r.creator.Dashboard,