Breaking: Switch computed_properties[_with_inputs] to take a type instead of subsystem argument

[MasonProtter]

Now instead of adding methods like

function GraphDynamics.computed_properties_with_inputs(::Subsystem{Particle})
    a(sys, input) = input.F / sys.m 
    (; a)
end

you do

function GraphDynamics.computed_properties_with_inputs(::Type{Particle})
    a(sys, input) = input.F / sys.m 
    (; a)
end