Since we factored out deployment-independent options to separate flake
the options that are left in this flake are still using the same
namespace. This change renames the option attrset local to this flake.
Create user-stop-box for dell wyse, first steps to rpi4 image.
Refactor parameters passed to gnuradio and telegram-decoder into proper
options, make configs stateful (so users can edit them). Rearrage files
a bit.