Added support passing program arguments

[guyluz11]

Fix: #3

Most of the code changes is just indenting the code back one slash and adding ,.

The actual future change is adding ...arguments to runFile() function and to all the function that calling it.

So the line of running python now looks like this

 Process.start(
        pythonPath, ["-u", pythonFile, ...arguments],
        mode: ProcessStartMode.normal,
        ........