feat(childManage): add RestrictionTime model for child usage restrictions

src/main/java/com/marketingconfort/brainboost_common/childManage/model/RestrictionTime.java

+package com.marketingconfort.brainboost_common.childManage.model;
+import com.marketingconfort.brainboost_common.childManage.enums.WeekDay;
+import jakarta.persistence.*;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+import java.time.LocalTime;
+import java.util.List;
+
+@Data
+@NoArgsConstructor
+@Entity
+@Table(name = "restriction_time")
+public class RestrictionTime {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.IDENTITY)
+    private Long id;
+
+    private LocalTime maxUseDaytime;
+
+    @ElementCollection
+    @Enumerated(EnumType.STRING)
+    @CollectionTable(
+        name = "restriction_time_days_allowed", 
+        joinColumns = @JoinColumn(name = "restriction_time_id") 
+    )
+    @Column(name = "day") 
+    private List<WeekDay> daysAllowed;
+
+    @Embedded
+    private BeachSchedule beachScheduleAuthorized;
+}