feat(backend): implement VoD functionality

src/main/java/com/ddf/vodsystem/repositories/VodRepository.java

@@ -0,0 +1,16 @@
+package com.ddf.vodsystem.repositories;
+
+import com.ddf.vodsystem.entities.User;
+import com.ddf.vodsystem.entities.Vod;
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.stereotype.Repository;
+
+import java.util.List;
+
+@Repository
+public interface VodRepository extends JpaRepository<Vod, Long>
+{
+    @Query("SELECT v FROM Vod v WHERE v.user = ?1")
+    List<Vod> findByUser(User user);
+}