Add code formatting option for lining up assignment operators in DSC configurations

[daviwil]

When a user writes a DSC configuration, they might line up their assignment statements like this:

configuration MyConfiguration {
    xDscWebService PSDSCPullServer {
        Ensure                = “Present”
        EndpointName          = “PSDSCPullServer”
        Port                  = 8080
        PhysicalPath          = “$env:SystemDrive\inetpub\wwwroot\PSDSCPullServer”
        CertificateThumbPrint = “AllowUnencryptedTraffic”
    }
}

We should do this formatting for them so that when they add new properties they can reformat the configuration and have all the properties be lined up at the equal signs again.

/cc @jpsnover @smurawski

[smurawski]

Folks also tend to do this with hashtables (especially when constructing one to splat into another command).

[kapilmb]

I think this rule would be a great addition to our existing set of rules. But do we want to limit ourselves just to Configurations or Hashtables? Should it be general enough that whenever there are consecutive assignment statements, it should take effect? Or maybe we can provide options wherein the user can select if they want to line up only property value pairs or consecutive assignment statements.

[dotps1]

I would prefer options, as I do not line the equal signs up, and would prefer not to be forced to.

[daviwil]

@kapilmb let's go with just configurations and hashtables for now and then expand to others if we get feedback on that

[daviwil]

@dotps1 we'll definitely have an option to turn it off!