Post Process Results from a BarForceRequest

#### Description:

in a model with a few thousand bars, we are running 7-12 time histories, which will output results for several thousand time steps each, creating a results file of around a terabyte. To avoid pulling all of those results, create a ReadResults method which post-processes these BarForces into only 1 or 2 per bar before outputting them to the UI. Also should avoid overloading memory, which at the moment needs to store the entire output of the request, causing a crash.