Share My Schedule with team

[Nataliya-Kulinenko]

Share My Schedule feature main points:

• Implement ability to share My Schedule with team (via shared link/code)
• Add ability to view team favorites on My Schedule screen
• Session Details screen - list mates, who are going to visit this Session
• Sessions/BoFs/Social Events - mark your team favorite Sessions

[Nataliya-Kulinenko]

Feature is ready for testing in connfa_v1 branch!