Get a record's reference value / allow dot-walking

[marvint24]

Hey there,

I've been working on a ServiceNow PowerShell module and recently discovered your project. It's a great tool.

I wasn't able to find an easy solution to get the values of a record's reference with your current implementation of Get-ServiceNowRecord.ps1.
I've developed a solution that I believe addresses this issue smoothly by enabling dot-walking functionality. This enhancement would allow users to easily access a reference field's properties, like $incident.caller_id.email and even something like $incident.opened_by.manager.department.cost_center.account_number.

If you like it, feel free to merge my pull request. If you have questions or annotations, don't hesitate to ask.

[gdbarron]

@marvint24 thanks for submitting this! I've been thinking about functionality like this lately so great timing. I'll dig in and let you know of any feedback.