Broker v3 protocol requires MSAL version, but not MSAL name

[bgavrilMS]

The broker protocol requires us to pass in the version of MSAL. But there are 2 MSALs that call the iOS broker - MSAL.iOS and MSAL.NET via Xamarin. So we need a way to differentiate between the 2, easiest is to log the client SKU.

Impact: small impact, but this improvement would make supportability easier, as you'd be able to see who called the broker directly from the logs.

[oldalton]

Verified that we always default to MSAL.iOS as the source library when request comes from MSAL. Agree that it's important to differentiate between MSAL.iOS, MSAL Xamarin and MSAL CPP.