Player should support window scaling

[civic9]

Hi, Some suggestions for the player.

1. Replay window scaling would be very helpful.
2. notify2 is totally incompatible with ms-windows, I think. I use the player with import notify2 and its calls commented out (but otherwise it works well, thanks). done in Added Windows support #129

[Res260]

What kind of error do you get with notify2? We have not tested the app for Windows, so your feedback is appreciated! :)

[civic9]

notify2 uses dbus which I don't think has any chance to work in windows.
https://stackoverflow.com/questions/49972005/no-module-named-dbus-error

Package dbus-python can't be installed on windows, so I removed it from setup.py.
Then notify2 can't work without dbus module:

Traceback (most recent call last):
  File "bin\pyrdp-player.py", line 23, in <module>
    from pyrdp.logging import LOGGER_NAMES, NotifyHandler
  File "c:\tmp\pyrdp\pyrdp\logging\__init__.py", line 10, in <module>
    from pyrdp.logging.handlers import NotifyHandler
  File "c:\tmp\pyrdp\pyrdp\logging\handlers.py", line 5, in <module>
    import notify2
  File "c:\users\civic9\AppData\Local\Programs\Python\Python36\lib\site-packages\
notify2.py", line 39, in <module>
    import dbus
ModuleNotFoundError: No module named 'dbus'

I think notifications could be just disabled for windows. It is not critical feature :)

[obilodeau]

Windows support, which was recently released, gets rid of notify2.

I'll adjust this issue so that it focuses only on window scaling.

[alxbl]

If anyone decides to look at this:

For window scaling, this could be implemented directly in the QRemoteDesktop (pyrdp/ui/qt.py) widget by polling the dimensions of the parent window and calling scaled() on the QImage buffer.