[cwd] Display Unix-style path in Git Bash prompt

[mloskot]

Is your feature request related to a problem? Please describe.

On Windows, in Git Bash, powerline-go -modules cwd displays current location in format of Windows-style path,

This is perfectly fine in PowerShell, but it is a bit of visually confusing in Git Bash (i.e. in Bash):

Describe the solution you'd like

It would be helpful, if the cwd module could distinguish Git Bash from PowerShell and display path in Unix-style in prompt, i.e. /d and /d/nanodbc for the case from the screenshot.

Describe alternatives you've considered

n/a

Additional context

• powerline-go 1.22.1
• Windows 11
• Windows Terminal 1.16.10262.0
• Git Bash from git version 2.39.2.windows.1