feat(material): add material handling and routing functionality

- Introduced MaterialHandler for managing learning materials and subjects.
- Updated router to include routes for public and admin material management.
- Enhanced database initialization with material subject and file models.
- Implemented seeding logic for material subjects and files.
- Updated wire generation to include MaterialHandler and related services.

internal/wire/repository.go

@@ -23,6 +23,8 @@ var RepositorySet = wire.NewSet(
 	repository.NewVoteRepository,
 	repository.NewChannelRepository,
 	repository.NewScheduleRepository,
+	repository.NewMaterialSubjectRepository,
+	repository.NewMaterialFileRepository,
 	ProvideUserActivityRepository,
 
 	// 日志相关仓储