Store gh config in %APPDATA% on windows

[mcorossigo]

Describe the bug

When I authenticate in gh with Powershell on Windows 10 it saves variuous files in .config/gh in my user profile folder.
It is expected on Linux, but on Windows I would love to have those files in %APPDATA% (like Github Desktop).

PS C:\Users\user> $PSVersionTable.PSVersion

Major  Minor  Build  Revision
-----  -----  -----  --------
5      1      19041  1

PS C:\Users\user> gh --version
gh version 1.0.0 (2020-09-16)
https://github.com/cli/cli/releases/tag/v1.0.0

Steps to reproduce the behavior

1. Authenticate
2. Find files in ~/.config/gh

Expected vs actual behavior

I expect configuration files to be in %APPDATA%/Github Cli when authenticating in Windows enviroment.

Logs

PS C:\Users\user> gh auth status
You are not logged into any GitHub hosts. Run gh auth login to authenticate.
PS C:\Users\user> gh auth login
? What account do you want to log into? GitHub.com
- Logging into github.com
? How would you like to authenticate? Login with a web browser

! First copy your one-time code: F775-F974
- Press Enter to open github.com in your browser...
✓ Authentication complete. Press Enter to continue...

? Choose default git protocol HTTPS
- gh config set -h github.com git_protocol https
✓ Configured git protocol
✓ Logged in as user
PS C:\Users\user> gh auth status
github.com
  ✓ Logged in to github.com as user(~/.config/gh/hosts.yml)
  ✓ Git operations for github.com configured to use https protocol.

[mislav]

Good point; thank you!

Ref. #554

[Neurognostic]

I would still like gh to respect XDG_CONFIG_HOME and XDG_DATA_HOME in a Windows environment, but to fall back to %APPDATA% and %LOCALAPPDATA% if XDG variables are not set.

[just1a-person]

I would still like to see config.yml in ~\.config\gh\config.yml

[melMass]

For those who find this from google, it wasn't obvious, this now gets installed in :

C:\Users\User\AppData\Roaming\GitHub CLI\config.yml