Use CTRL + D to exit and CTRL + L to cls in Powershell console

There is a new library PSReadline for Powershell v3.0 that emulates the GNU Bash tab completion and key bindings. Even CTRL + R for reverse incremental search works. Exactly what I wanted.

Old question, but with PowerShell 5.1 and PowerShell Core 6.x and later:

Set-PSReadlineKeyHandler -Key ctrl+d -Function ViExit