SLNE-Development/surf-lobby-jump-and-run

AI Summary: This issue proposes adding an actionbar display for Parkour, showing the player's current jumps and highscore. Current jumps will be retrieved from `ParkourGenerator#currentIndex`, while the highscore will be managed using a CaffeineMC cache. The actionbar will update asynchronously and leverage `surf-api` for messaging, with the feature to be merged into the `feat/rework` branch.