refactor: use PyQT5 for window display

[jeertmans]

Fixes Issue

Using PyQT5 should enable hiding mouse.

Therefore, Closes #48.

TO DO list

• handle keystrokes
• animate whole video
• add support for blank cursor
• handle resizing
• handle resizing with keep aspect ratio
• handle full screen
• show video info in another frame
• remake wizard gui
• update config file

Description

This PR adds a new dependency, PyQT5, in the hope to provide a more complete window management.

Check List (Check all the applicable boxes)

• I understand that my contributions needs to pass the checks.
• If I created new functions / methods, I documented them and add type hints.
• If I modified already existing code, I updated the documentation accordingly.
• The title of my pull request is a short description of the requested changes.