NCBACK-34 add logic for clear does not exist files,add dto for similar file search controller

src/main/java/ru/soune/nocopy/entity/file/FileEntity.java

@@ -1,5 +1,6 @@
 package ru.soune.nocopy.entity.file;
 
+import com.fasterxml.jackson.annotation.JsonIgnore;
 import jakarta.persistence.*;
 import lombok.*;
 import org.springframework.data.annotation.CreatedDate;
@@ -60,6 +61,10 @@ public class FileEntity {
     @Column(name = "updated_at")
     private LocalDateTime updatedAt;
 
+    @OneToOne(mappedBy = "file", cascade = CascadeType.ALL, orphanRemoval = true)
+    @JsonIgnore
+    private ImageHashEntity imageHash;
+
     @PrePersist
     public void prePersist() {
         if (this.status == null) {