feat(JingleSessionPC): add options for P2P evaluation
feat(JingleSessionPC): add options for P2P evaluation

Add 'forceJVB121Ratio' config option which allows to enforce JVB
conference even if the P2P connection can be established. In such case
'forceJVB121' permanent analytics property will be added.

Will also set 'p2pFailed' analytics property to 'true' in case ICE fails
on the P2P connection.

adambowles/lib-jitsi-meet,adambowles/lib-jitsi-meet,jiyeyuran/lib-jitsi-meet,jitsi/lib-jitsi-meet,nevermind-corp/ljm,jitsi/lib-jitsi-meet,damencho/lib-jitsi-meet