*-Resource and *-ResourceRepository cmdlets should support -PassThru

[JustinGrote]

Install-PSResource, if -PassThru is specified, it should return the same object that Get-PSResource for the same item does. This will enable it to be easier to both verify an installation, and pass the object to other commands (e.g. import module).

[ThomasNieto]

I didn't see this one when I created #158 for -PassThru parameter on all applicable cmdlets.

[ThomasNieto]

@SydneyhSmith the scope of this issue will need to be expanded to cover the other issue I opened for the other cmdlets.

[SydneyhSmith]

Thanks for calling that out @ThomasNieto just updated the title to make sure we keep that in mind

[anamnavi]

Register-PSResourceRepository -> supports PassThru
Set-PSResourceRepository -> supports PassThru
Unregister-PSResourceRepository -> add support

Install-PSResource -> supports PassThru
Update-PSResource -> supports PassThru
Save-PSResource -> supports PassThru