In a quite neighbourhood at South Odorkor in Accra, where Dr. Kofi Abrefa Busia, one-time Prime Minister of Ghana, had his home, a number of young men gather daily around the game of draughts, sharing their experiences.   They are proud owners of small-scale businesses, offering services ranging from tailoring, barbering, pub attendants and laundry workers, to a growing clientele among the working class population.