feat(arbor): add arbor module

arbor-module/CMakeLists.txt

arbor-module/CPM.cmake

arbor-module/examples/ring/.DS_Store

arbor-module/examples/ring/._.DS_Store

arbor-module/examples/ring/CMakeLists.txt

arbor-module/examples/ring/CPM.cmake

arbor-module/examples/ring/branch_cell.hpp

arbor-module/examples/ring/readme.md

arbor-module/examples/ring/ring.cpp

arbor-module/examples/ring/sup/CMakeLists.txt

arbor-module/examples/ring/sup/README.md

arbor-module/examples/ring/sup/include/sup/ioutil.hpp

arbor-module/examples/ring/sup/include/sup/json_meter.hpp

arbor-module/examples/ring/sup/include/sup/json_params.hpp

arbor-module/examples/ring/sup/include/sup/path.hpp

arbor-module/examples/ring/sup/include/sup/strsub.hpp

arbor-module/examples/ring/sup/ioutil.cpp

arbor-module/examples/ring/sup/json_meter.cpp

arbor-module/examples/ring/sup/path.cpp

arbor-module/include/insite/arbor/arbor_probe.h