Improve incorrect credentials handling for tss provisioning #1573
Description
We frequently receive reports from users who have issues with credentials.
One of the most common cases, besides the mobile app users' uppercasing the first letter, is due to the provisioning through "tplink simple setup" (tss) where the newly provisioned devices do not accept the regular credentials.
Until, and if, we can handle TSS provisioned devices, we could inform the users better by:
- Raising a separate exception (inheriting from the existing unauthorized exception) when credentials fail and the
obd_sourceis set totss - Catching this exception in the cli tool to inform the user and to provide more concrete instructions how to fix the situation
- Catching this exception in the homeassistant integration to provide more concrete instructions how to fix the situation