wip: better makefile setup

quad/.gitignore

quad/Makefile

quad/library.mk

quad/src/computation_graph/.gitignore

quad/src/computation_graph/Makefile

quad/src/computation_graph/Makefile_old

quad/src/computation_graph/node_accumulator.h

quad/src/computation_graph/node_add.h

quad/src/computation_graph/node_constant.h

quad/src/computation_graph/node_gain.h

quad/src/computation_graph/node_mult.h

quad/src/computation_graph/node_pow.h

quad/src/computation_graph/test/test_computation_graph.c

quad/src/computation_graph/tests.c

quad/src/computation_graph/tests.h

quad/src/gen_diagram/generate.c

quad/src/quad_app/.gitignore

quad/src/quad_app/Makefile

quad/src/quad_app/commands.c

quad/src/quad_app/commands.h