Evaluate converting code to pyside2

Added a branch to try it out... it was possible to switch from PyQt5 to PySide2 by merely changing the imports.

pyinstaller onefile .exe seems to be about 5Mb bigger through.

https://github.com/pfeerick/PinetimeFlasher/tree/pyside2

It also isn't fixing the problem I hoped it would solve. The current code is running fine in the Pinebook Pro running Manjaro, but doesn't seem to be able to run it on the pinephone... either get this with PyQt5 imports

Traceback (most recent call last):
  File "/home/kde/repos/PinetimeFlasher/./PinetimeFlasher.pyw", line 8, in <module>
    from PyQt5.QtWidgets import *
ImportError: /usr/lib/python3.9/site-packages/PyQt5/QtGui.abi3.so: undefined symbol: _ZTI18QOpenGLTimeMonitor, version Qt_5

or with PySide2 imports

Traceback (most recent call last):
  File "/home/kde/repos/PinetimeFlasher/./PinetimeFlasher.pyw", line 8, in <module>
    from PySide2.QtWidgets import *
  File "/usr/lib/python3.9/site-packages/shiboken2/files.dir/shibokensupport/__feature__.py", line 142, in _import
    return original_import(name, *args, **kwargs)
ImportError: could not import module 'PySide2.QtGui'

even though

[kde@plasma-mobile PinetimeFlasher]$ pip list | grep -e PyQt5 -e PySide2
PyQt5          5.15.4
PyQt5-sip      12.8.1
PySide2        5.15.2

pfeerick / PinetimeFlasher

Evaluate converting code to pyside2 #7