Request for sshrc support

[cipherswami]

Summary of the new feature / enhancement

In UNIX implementation has local rc file in ~/.ssh and system wide sshrc fie in /etc/ssh, which runs when ssh'ed.

Proposed technical implementation details (optional)

Please implement a similar feature for Windows OpenSSH to use PowerShell as the default SSH shell, while still not effecting other sessions like SFTP, VS Code SSH server.

[StevenBucher98]

Thanks for the issue @cipherswami! We have documentation on how to set up your default shell here, https://github.com/PowerShell/Win32-OpenSSH/wiki/DefaultShell, would this satisfy your scenario, or do you need more commands to be ran in the sshrc file?

Additionally, I am not sure how we could only use this for particular sessions since the sshrc seems to be a core feature for ssh and would affect any session.

[cipherswami]

@StevenBucher98 Thanks for helping me set the default shell.

I think the last time I didn't set "commandOption", hence it was interfering with sftp.

But still I request you guys to set PowerShell as default shell in future versions of win32-OpenSSH. And support for system wide sshrc file, would be great.

[matsmcp]

my 2 cents.
DefaultShell is per system. I did request to make this per user in #1741

This could be one way of doing it

[anttiah]

Changing shell to PowerShell is not enough because in Windows all PowerShell scripts must have valid file name extension (e.g. .ps1). See PowerShell/PowerShell#16480