PySimLogger: add parameter to set initial log-level/verbosity
When we initialize a new PySimLogger, we always call the setup method first and then use the set_verbose and set_level method to configure the initial log level and the initial log verbosity. However, we initialize the PySimLogger in all our programs the same way and we end up with the same boilerplate code every time. Let's add a keyword parameter to the setup method where we can pass our opts.verbose (bool) parameter so that the setup method can do the work for the main program.
In case the caller wants a different default configuration he still can call set_verbose and set_level methods as needed.
