add Debug logger for CG #116

Job	Run time
Tests with modeling interface	3m 18s
Tests with GLPK (branch-and-bound/test_bab_knapsack_GLPK)	3m 17s
Tests with HiGHS (branch-and-bound/test_bab_knapsack_HiGHS)	9m 6s
Tests with Mosek (branch-and-bound/test_bab_knapsack_Mosek)	11m 26s
Tests with GLPK (branch-and-bound/test_bab_location_GLPK)	4m 59s
Tests with HiGHS (branch-and-bound/test_bab_location_HiGHS)	7m 3s
Tests with Mosek (branch-and-bound/test_bab_location_Mosek)	4m 46s
Tests with GLPK (branch-and-price/test_bap_assignment_GLPK)	6m 22s
Tests with HiGHS (branch-and-price/test_bap_assignment_HiGHS)	11m 4s
Tests with Mosek (branch-and-price/test_bap_assignment_Mosek)	18m 21s
Upload coverage report	20s
	1h 20m 2s

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