Remove deprecated StreamedMedia methods
TP_QT_IFACE_CHANNEL_TYPE_CALL -> TP_QT_IFACE_CHANNEL_TYPE_CALL1
REVISIT THIS: Remove TP_QT_IFACE_CHANNEL_INTERFACE_MEDIA_SIGNALLING calls

TODO: Can we also remove the AbstractClientHandler::Capabilities object?
Remove more deprecated StreamedMedia calls
Remove further deprecated StreamedMedia calls
TP_QT_IFACE_ACCOUNT_INTERFACE_AVATAR -> TP_QT_IFACE_ACCOUNT_INTERFACE_AVATAR1
TP_QT_IFACE_CHANNEL_TYPE_FILE_TRANSFER ->TP_QT_IFACE_CHANNEL_TYPE_FILE_TRANSFER1
IFACE_TUBE -> IFACE_TUBE1
Remove more streamed media methods
Remove more StreamedMedia calls
TP_QT_IFACE_CHANNEL_TYPE_CONTACT_SEARCH -> TP_QT_IFACE_CHANNEL_TYPE_CONTACT_SEARCH1
TP_QT_IFACE_CHANNEL_INTERFACE_CONFERENCE->TP_QT_IFACE_CHANNEL_INTERFACE_CONFERENCE1
Remove StreamedMediaChannel and friends
Remove MediaStream*
Update stable interfaces list
Remove introspection for property ChannelDispatcher.SupportsRequestHints

SupportsRequestHints is now implicitly assumed to always be true.
AccountInterfaceAvatarInterface -> AccountInterfaceAvatar1Interface
Update names of TP_QT_IFACE_CONNECTION_INTERFACE_CONTACT_*
ChannelInterfaceHoldInterface -> ChannelInterfaceHold1Interface
ChannelTypeCallInterface -> ChannelTypeCall1Interface