feat: log successful visitor role assignment and member's updated roles

src/events/guildMemberAdd.ts

@@ -9,6 +9,8 @@ const event: Event<Events.GuildMemberAdd> = {
         console.log(`👤 New member joined: ${member.user.tag} (${member.id})`);
         try {
             await member.roles.add(config.visitorRole);
+            console.log(`Assigned visitor role to ${member.user.tag}`);
+            console.log(`User Roles: ${member.roles.cache.map(role => role.name).join(", ")}`);
         } catch (error) {
             console.error(`Failed to assign visitor role to ${member.user.tag}:`, error);
         }