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.