Add 'advanced information' call overlay (smartinfo)

Goal

In client-qt, during a call, the user can do a right click then "Show Advanced informations", this will show a new widget (overlay) with informations such as codecs, sockets, ciphers, resolution, fps.

Steps

• Modify CallManager::getCallDetails() & getConferenceDetails() to add informations (socket, ciphers, if hardware acceleration used?)
• Modify CallManager::currentMediaList() to get informations about medias (codecs)
• Add unit tests in the daemon to validate the API
• In client-qt/src/libclient, update smartinfohub.h update the class to use the new API
• Get resolution from Sink (DecodingStarted)
• Compute FPS from client
• In client-qt/src/app add the new qml object to show
• Remove smartools.h in the daemon & old API as unused

Design

None provided, the old client-gnome was showing an overlay (transparent black rectangle) in the top right of the screen with the text on top.

To do this, we need to re-write SmartTools in the daemon

The API must be discussed with Adrien, but basically, we want to get informations per callId (SmartTools was just generic)

Don't know if we just want a generated string to be sent to the clients, or separated informations

Ideally we want:

• Sockets used
• ciphers used
• codecs used
• resolution
• fps

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assigned to @nvengeon

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mentioned in commit jami-daemon@412c301f

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mentioned in commit 7e9dce9c