Simulation Experience Enhancement

[pedrocalil11]

The main goal of the package is to easily simulate different systems and bidding strategies. For now, the content inside "src" directory does just a little about it. It has the core MarketSimulator structures, a couple of functions to run the simulation in these structures and a lot of plotting functions.
Inside "examples" directory, a group of different simulations were coded, and each one differs from the others just a little, but they carry a lot of code. This is difficult for Users to figure out what is needed to properly run a simulation, and to maintain this code.
If every time one wants to simulate a test case it will require it to write a different script similar to the others or changing the existing ones a lot of time will be wasted.
All the simulation scripts basically follow this routine (all images were taken from examples/5bus_nrel/5bus_nrel_load_gen_bid_script_dart.jl):

1. Load required data and utils to be used in simulation;
   

2. Instantiate solvers;
   

3. Create base systems for DA and RT;
   

4. Modify system according to the strategies, or external factors;
   

5. Create templates and finally instantiate MarketSimulator used in simulation;
   

The idea is to create a encapsulated module inside GridAnalysis "src" folder that does all the dirty job for us, and minimize the amount of information the User needs to provide in "examples" to successfully run a simulation.