Add models based on Db tables

src/main/java/org/to/telegramfinalproject/Models/GroupMember.java

@@ -0,0 +1,32 @@
+package org.to.telegramfinalproject.Models;
+
+import java.time.LocalDateTime;
+import java.util.UUID;
+
+public class GroupMember {
+    private UUID group_id;
+    private UUID user_id;
+    private LocalDateTime join_at;
+    private String role;
+
+    public GroupMember(UUID group_id, UUID user_id, String role){
+        this.group_id = group_id;
+        this.user_id = user_id;
+        this.join_at = LocalDateTime.now();
+        this.role = role;
+    }
+
+    public  void  setGroup_id(UUID group_id){this.group_id = group_id;}
+    public void  setUser_id(UUID user_id){this.user_id = user_id;}
+    public void  setJoin_at(LocalDateTime join_at){this.join_at = join_at;}
+    public void setRole(String role){this.role = role;}
+
+
+
+    public  UUID  getGroup_id(){return this.group_id;}
+    public UUID  getUser_id(){return this.user_id;}
+    public LocalDateTime  getJoin_at(){return this.join_at;}
+    public String getRole(){return this.role;}
+
+
+}