A chance encounter a few years ago at a local CrossFit gym led friends Yvonne Allison, Celia Stewart and Secilia Zamudio to lay the groundwork for their first brick-and-mortar store, Cielito Rosa Bakery. The bakery, located in the Southern Avenue space formerly occupied by Bearscat Bakehouse, across the street from Mesa Community College, is set to open in May. The trio of bakers plan to serve American and Mexican-themed baked goods and coffee…