Expand add_transform! to be able to handle non-shared parameters

[lrennels]

The signature

function add_transform!(sim_def::SimulationDef, paramname::Symbol, op::Symbol, rvname::Symbol, dims::Vector{T}=[]) where T

Only allows a Symbol paramname, but we want to have an option to pass compname.paramname

[lrennels]

Found it!