Zipline added to test branch

A new feature has been added to the test branch of the Rust game update - a zipline. It allows players to move around the game world using a rope and a hook.

The first tests of this feature have already been conducted, and players can try out the zipline in action. Thus, the addition of the zipline offered new opportunities for exploring the world of Rust and diversifying the gameplay.

In addition, the question arose - will it be possible to pull the zipline cable independently? This question remains open for now, and the developers can conduct additional tests to resolve this issue.