Feature: Room Link Sharing for Easy Join

[Sharath196266]

Enable users to share a unique room link so others can directly join the room with a single click. When someone joins via the link, they are automatically synced with all current room members

[ShubhamSPawade]

@freeman-jiang Solved this issue in my recent pr
#42

[freeman-jiang]

This is already possible if you share something like https://www.beatsync.gg/room/080808 for instance.