Check phone type for VOIP, log carrier (LG-4102, LG-4100)

[zachmargolis]

Copy is pending, here's what it looks like when we do a field error with some made-up copy

I had some fun with temporary copy

[jmhooper]

Did we decide we want to prevent VOIP numbers from signing up entirely? I thought we were only planning on blocking them at AAL2?

[porta-antiporta]

I missed it. is this PR a prototype to test the integration with the service that'll be validating numbers are not VOIP or is this meant to be full prod implementation?

agree with @jmhooper though that we do want to impose this restriction when AAL2 is explicitly requested, or implicitly required because they are signing into IAL2.

[jmhooper]

@porta-antiporta, @zachmargolis, @TiffanyAndrews, and I synced up on this. We determined we are going to go with this approach where we are disallowing VOIP numbers on phone setup.

[stevegsa]

Looks good!