custom resolution size added for start modes main and game

[jTorresR8]

partial solution for the problem:
#1546

implemented cli arguments for window screen width and height parameters for the main and game start modes for the openage game engine.

[heinezen]

Hey thank you but why did you close this?

[jTorresR8]

if I'm honest, I got scared/discouraged when I saw a bunch of automated tests fail due to my misconfiguration of the project probably. (I never got to display anything besides the diamond with orange background)

although I did get the cli parameters for custom screen width/height working , I couldn't find a way to implement vsync or find out the resolution of the target display to then pass it as parameters.

[heinezen]

@torresja2911 The CI checks are there to help you see what's wrong and not to discourage you :)

If you don't understand some of them, you can always ask in the chat or in the issues.