- Add openocd_<target>: runs openocd for the target
- Add openocd_flash_<target>: flashes the target using openocd.
It works with both an already running openocd instance as well
as launching its own one. Uses a helper tool that requires python.
- Add openocd_cfg_<target>: generates openocd config for target. Used
for generating an openocd config automatically when launching
a debug session from an IDE.
