add helper scripts

[mancala] / data / gamelist.xml

<?xml version="1.0"?>
<gamelist>
        <name>kalah</name>
        <name>oware</name>
        <name>barbados_warri</name>
        <name>bechi</name>
        <name>dakon</name>
        <name>sungka</name>
        <name>chungka</name>
</gamelist>