[DOCS]: Copilot CLI on Windows Diff CLIs -> Git bash, Command Prompt & Powershell 🙇🏽

[dhruvg20]

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Hi,

I wanted to understand which all CLIs in Windows do we support, and which versions?

Few Example CLI my customer is trying are:

1. Git bash
   a. Both for gh copilot suggest/explain and aliases, We see a prompt function not available error. It is not taking input prompt at all for both cases
2. Command Prompt
   a. gh copilot suggest/explain is working
   b. We do not know the commands to setup aliases. Do we have something?
3. Powershell
   a. We seeing similar error seen here: Provide support for PowerShell Desktop 5.x
   #50
   b. Could our documentation state from which version of PowerShell we support Copilot aliases or provide a solution for it.

Please do guide or help 🙏🏽

I had also opened up a Q/A discussion here: #85