Add hubid for user

src/main/java/net/gepafin/tendermanagement/entities/HubUserEntity.java

@@ -0,0 +1,22 @@
+package net.gepafin.tendermanagement.entities;
+
+import jakarta.persistence.*;
+import lombok.Getter;
+import lombok.Setter;
+
+@Entity
+@Table(name = "hub_user")
+@Getter
+@Setter
+public class HubUserEntity extends BaseEntity{
+
+    @ManyToOne
+    @JoinColumn(name = "hub_id", nullable = false)
+    private HubEntity hub;
+
+    @ManyToOne
+    @JoinColumn(name = "user_id", nullable = false)
+    private UserEntity user;
+
+
+}