Allow using SIP account for tel URI
This allows to mark SIP accounts as being able to handle PSTN phone calls (because the SIP server provides a PSTN gateway).
This MR has 3 components:
- Add a property "can-tel" to indicate if a SIP account can handle PSTN phone calls
- UI switch in the account management
- Handles suitable SIP addresses as phone numbers
Edited by Evangelos Ribeiro Tzaras