perf(User): añadido nombre de usuario a User y unique a email

src/main/java/com/example/apprecetas/user/domain/entity/User.java

@@ -14,5 +14,6 @@ public class User {
     private String surname;
     private String email;
     private String password;
+    private String username;
 
 }

src/main/java/com/example/apprecetas/user/infrastructure/controller/dto/UserInputDto.java

@@ -11,7 +11,7 @@ import lombok.NoArgsConstructor;
 @NoArgsConstructor
 public class UserInputDto {
 
-    @Size(min = 2, max = 20, message = "El nombre debe tener entre 6 y 20 caracteres")
+    @Size(min = 2, max = 20, message = "El nombre debe tener entre 2 y 20 caracteres")
     private String name;
 
     @Size(min = 6, max = 20, message = "Los apellidos deben tener entre 6 y 20 caracteres")
@@ -23,4 +23,6 @@ public class UserInputDto {
     @Size(min = 8, message = "La contraseña debe tener al menos 8 caracteres")
     private String password;
 
+    private String username;
+
 }

src/main/java/com/example/apprecetas/user/infrastructure/controller/dto/UserOutputDto.java

@@ -13,5 +13,6 @@ public class UserOutputDto {
     private String name;
     private String surname;
     private String email;
+    private String username;
 
 }

src/main/java/com/example/apprecetas/user/infrastructure/repository/jpa/UserJpa.java

@@ -21,10 +21,13 @@ public class UserJpa {
     @Column(name = "apellidos")
     private String surname;
 
-    @Column(name = "email")
+    @Column(name = "email", unique = true)
     private String email;
 
     @Column(name = "password")
     private String password;
 
+    @Column(name = "usuario", unique = true)
+    private String username;
+
 }