SIP Call Tranfer Issues

1. Should not hangup call immediately
2. TBD (call flow)

added sprintin progress label

mentioned in commit 5295e4aa

client related issues

https://review.jami.net/c/jami-client-qt/+/17370

https://review.jami.net/c/jami-client-qt/+/17296/13

daemon related issues
https://git.jami.net/savoirfairelinux/ring-daemon/-/issues/499

closed

removed sprintin progress label