Add application icon, a couple more exceptions in gitignore

[LevBernstein]

Uses the PlayerIcon file from Hearthstone_Data/Resources. I also increased the default window size for the login window, as I was getting annoyed at having to scroll.

[LevBernstein]

@0xf4b1 Please review; do you think this enhancement would improve the project? Thanks. I've found that the default login window is too small, so I resized that, and I added an icon for the window just for fun.

[0xf4b1]

hmm, I think this minor changes to the login app which actually only needs to be run once to get the token are not really necessary and the icon file still makes it path dependant

[LevBernstein]

At the very least, increasing the window size would make it easier to navigate, no? Not having to scroll would be nice.

[0xf4b1]

I cannot test at the moment.. I'm not aware that the login looks weird but I also haven't ran it since years because the token never expires once you have it 😅