add MediaLofi in kontor-gin (#97)

Co-authored-by: Thomas Peetz <thomas.peetz@cimt-ag.de>
Reviewed-on: #97

kontor-gin/internal/service/media_file.go

@@ -20,3 +20,18 @@ func (service *MediaFileService) List(context context.Context) ([]models.MediaFi
 	slog.Info("MediaFileService#List")
 	return service.repository.FindAll(context)
 }
+
+func (service *MediaFileService) Get(context context.Context, id string) (*models.MediaFile, error) {
+	slog.Info("MediaFileService#Get")
+	return service.repository.GetById(context, id)
+}
+
+func (service *MediaFileService) Add(context context.Context, url string) (*models.MediaFile, error) {
+	slog.Info("MediaFileService#Add")
+	return service.repository.Add(context, url)
+}
+
+func (service *MediaFileService) Delete(context context.Context, id string) error {
+	slog.Info("MediaFileService#Delete")
+	return service.repository.Delete(context, id)
+}