By Sayantani Ghosh and Solarina Ho TORONTO (Reuters) – Canadian retailers, scrambling to keep pace with the likes of Wal-Mart Stores Inc and Amazon.com Inc in an increasingly crowded market, are investing heavily in high-tech tools to lure shoppers. Companies have ramped up their efforts to address consumers evolving shopping habits and to compete with rivals such as Wal-Mart, which is pouring more than C$30 million ($27.4 million) into Canadian e-commerce projects this year. Canadian Tire Corp , Hudsons Bay Co and Metro Inc are among those making technology investments. …