Add domain for users, posts, comments

src/main/java/com/cubetiqs/demo/domain/UserEntity.java

@@ -0,0 +1,21 @@
+package com.cubetiqs.demo.domain;
+
+import lombok.*;
+
+import javax.persistence.Column;
+import javax.persistence.Entity;
+import javax.persistence.Table;
+
+@Entity
+@Table(name = "users")
+@EqualsAndHashCode(callSuper = true)
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+public class UserEntity extends BaseEntity<Long> {
+    @Column(name = "email", length = 100, unique = true, nullable = false)
+    private String email;
+
+    @Column(length = 100)
+    private String password;
+}