Refactor to use SpringJPA

src/main/java/de/w665/biblenotes/db/entity/Role.java

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+package de.w665.biblenotes.db.entity;
+
+public enum Role {
+    ADMINISTRATOR,
+    USER
+}

src/main/java/de/w665/biblenotes/db/entity/User.java

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+package de.w665.biblenotes.db.entity;
+
+import jakarta.persistence.*;
+import lombok.*;
+import java.time.LocalDateTime;
+
+@Entity
+@Table(name = "users")
+@Getter
+@Setter
+@NoArgsConstructor
+@AllArgsConstructor
+@ToString
+public class User {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column(nullable = false, unique = true)
+    private String username;
+
+    @Column(nullable = false)
+    private String password;
+
+    @Column(nullable = false, unique = true)
+    private String email;
+
+    @Enumerated(EnumType.STRING)
+    @Column(nullable = false)
+    private Role role;
+
+    @Column(nullable = false)
+    private LocalDateTime createdAt;
+
+    @Column(nullable = false)
+    private LocalDateTime updatedAt;
+}

src/main/java/de/w665/biblenotes/db/entity/UserLogin.java

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+package de.w665.biblenotes.db.entity;
+
+import jakarta.persistence.*;
+import lombok.*;
+
+import java.time.LocalDateTime;
+import java.util.Date;
+
+@Entity
+@Table(name = "user_logins")
+@Getter
+@Setter
+@NoArgsConstructor
+@AllArgsConstructor
+public class UserLogin {
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    @Column(nullable = false)
+    private Long userId;
+
+    @Column(nullable = false)
+    private LocalDateTime loginTime;
+
+    @Column(nullable = false)
+    private String loginIp;
+}