removed common folder, linking from quad side

ci-build.sh

common/commands.c

common/commands.h

common/common.txt

common/examples_c

groundStation/Makefile

groundStation/src/backend/backend.c

groundStation/src/backend/nodes.c

groundStation/src/backend/output.c

groundStation/src/backend/param.c

groundStation/src/backend/source.c

groundStation/src/backend/update.c

groundStation/src/cli/cli_nodes.c

quad/src/quad_app/commands.c

quad/src/quad_app/commands.c

quad/src/quad_app/commands.h

quad/src/quad_app/commands.h