Sketch: call all members on a scheduled call automatically

[tomastiminskas]

• We need some integration with google calendar or our own calendar on a server that can run jobs X time before the call event
• Implement VoiP notifications on V2 for iOS to receive incoming call
• Implement new UI for Mac and Windows incoming calls (will show when app receives a specific message through MQTT)
• Implement VoiP notification on Android
• Server will trigger the VoiP push and the MQTT msg X time before the call