Add Cmder to the shells on windows

[DRSDavidSoft]

Cmder shell

Cmder is a terminal package in windows combining some useful features (aliases, user-profiles, Clink, and git integregtion) with a beautiful shell prompt. Here's a screenshot:

Request description

In here:

https://github.com/Eugeny/terminus/blob/7a005132cca25abee78afe8e9fbd025b9603b762/terminus-terminal/src/shells/windowsStock.ts#L20

Could you please add Cmder as a shell if %CMDER_ROOT% variable is detected and set?

            {
                id: 'cmder',
                name: 'Cmder',
                command: 'cmd.exe',
                args: [
                    '/k',
                    '%CMDER_ROOT%/vendor/init.bat'
                ]
            },

Currently, I'm using the custom shell method to load Cmder into Terminus. This is because the Clink configuration that Cmder uses is more eye pleasing and feature rich on Windows.

[Eugeny]

I've just added it in 5d605a4 :)

[DRSDavidSoft]

@Eugeny That's amazing, thanks for the quick implementation!