wip: moved files to new structure

quad/Makefile

quad/computation_graph/src/main.c

quad/computation_graph/test/Makefile

quad/src/computation_graph/.gitignore

quad/src/computation_graph/Makefile

quad/src/computation_graph/computation_graph.c

quad/src/computation_graph/computation_graph.h

quad/src/computation_graph/node_accumulator.c

quad/src/computation_graph/node_accumulator.h

quad/src/computation_graph/node_add.c

quad/src/computation_graph/node_add.h

quad/src/computation_graph/node_constant.c

quad/src/computation_graph/node_constant.h

quad/src/computation_graph/node_gain.c

quad/src/computation_graph/node_gain.h

quad/src/computation_graph/node_mult.c

quad/src/computation_graph/node_mult.h

quad/src/computation_graph/node_pow.c

quad/src/computation_graph/node_pow.h

quad/src/computation_graph/test_computation_graph.c