This reverts commit 4a99991086.
Reason for revert: temporary revert since this breaks the build on most distros that we currently support, including Ubuntu 24.04, and sdbus-cpp 2.0 is not backward compatible with older systemd versions.
GitLab: #1141
Change-Id: I3d50c0a433bd63d7dc76a2659258cf9e38bbbc29
Now a conference can start without any call (this avoid to attach
a call without peer to create a conference).
Path is now clearer for a call creation:
+ If we receive a call, we attach it to the conference
+ Else we do not create any call and just attach the host.
Next step is to be able to attach a host in audio only without weird
tricks and group addParticipant/bindParticipant
GitLab: #953
Change-Id: I13785a5525e041c37fb62c0c9f355e9371f1e4ad
Else, we can see several deadlock (closeVideoInput() will wait
forever, because a signal is emitted before the method is finished
causing a deadlock in sdbus-cpp)
Change-Id: I87d5a5d51e80f3b75e60354595f8c618def361ff