Robust phone number user input

[chrismatix]

Current state

Users can supply phone numbers for Twilio Sms and Whatsapp. We use these as a sourceConversationId and match it with incoming Webhook data from Twilio.

However, sometimes users may enter their phone numbers with spaces e.g. "+49 123 456 789", which will cause this exact match to fail.

Desired state

The Twilio channel connectors properly normalize the input before storing the channel.