added all makefiles and .gitignores

source_codes/Makefile

source_codes/loops_tests/.gitignore

source_codes/loops_tests/Makefile

source_codes/pointeurs/.gitignore

source_codes/pointeurs/Makefile

source_codes/pointeurs/string_deep_shallow_copy.c

source_codes/recursivity/rec_fibonacci.c

source_codes/refactor_with_functions/.gitignore

source_codes/refactor_with_functions/Makefile

...des/refactor_with_functions/chess_queen_refactored_part.c

source_codes/sorting/.gitignore

source_codes/sorting/Makefile

source_codes/structures/.gitignore

source_codes/structures/Makefile

source_codes/structures/fractions.c

source_codes/structures/fractions_part.c

source_codes/tableaux_1d/.gitignore

source_codes/tableaux_1d/Makefile

source_codes/tableaux_1d/tri_select_ebauche.c

source_codes/tableaux_2d/.gitignore