fix : 테이블 추가 및 수정

- 신규 (user_roles, user_tenants)
- 수정 (roles, tenants, users)

app/Models/Tenant.php

@@ -42,4 +42,24 @@ public function subscription()
     {
         return $this->belongsTo(Subscription::class, 'subscription_id');
     }
+
+    public function userTenants()
+    {
+        return $this->hasMany(UserTenant::class);
+    }
+
+    public function users()
+    {
+        return $this->belongsToMany(User::class, 'user_tenants');
+    }
+
+    public function roles()
+    {
+        return $this->hasMany(Role::class);
+    }
+
+    public function userRoles()
+    {
+        return $this->hasMany(UserRole::class);
+    }
 }