modules/console: Add user rooms count cmd.

modules/console.cc

@@ -11340,6 +11340,33 @@ console_cmd__user__rooms(opt &out, const string_view &line)
 	return true;
 }
 
+bool
+console_cmd__user__rooms__count(opt &out, const string_view &line)
+{
+	const params param{line, " ",
+	{
+		"user_id", "[membership]"
+	}};
+
+	const m::user &user
+	{
+		param.at(0)
+	};
+
+	const string_view &membership
+	{
+		param[1]
+	};
+
+	const m::user::rooms rooms
+	{
+		user
+	};
+
+	out << rooms.count(membership) << std::endl;
+	return true;
+}
+
 bool
 console_cmd__user__rooms__origins(opt &out, const string_view &line)
 {