Create `Enable-AIShell` for easier auto start up of AI Shell

[StevenBucher98]

Summary of the new feature / enhancement

As a user I like to have AI Shell open by default and so it would be nice to have a simple cmdlet to enable it by default, similar to that of Az Predictor. Perhaps something more verbose like Enable-AIShell -Auto to save a script to my $PROFILE to check if I am in a WT session and then open using Start-AIShell

Proposed technical implementation details (optional)

A cmdlet to add code to my $PROFILE to check if I am in Windows Terminal and if so then launch AI Shell with Start-AIShell