Add support for Windows

[radlinskii]

Currently paths for results file and config file are hardcoded to ~/.local and ~/.config and they need to be changed to try to support Windows platform. https://github.com/dirs-dev/dirs-rs is already in the project so it might be handy to use it. But the paths that it uses are different than ~/.local and ~/.config for MacOS, which I'm not a big fan of. I would rather stick to those directories on MacOS still.

Than, once the paths are updated the program would need to be compiled for windows target and tested there.

• [x] change paths
• [ ] fix #39
• [ ] create release in https://github.com/radlinskii/donkeytype/blob/33a3b08a92333bc258ae9cb53eea0b74d9598812/.github/workflows/release.yml#L15-L16

[0Ky]

I'd like to work on this task, please assign this issue to me.