Teleport to different world

[vyPal]

Implements #511

Description

This PR adds one new public function to the Player struct:

• pub async fn teleport_world(self: Arc<Self>, new_world: Arc<World>, position: Option<Vector3<f64>>, yaw: Option<f32>, pitch: Option<f32>) - Teleport player to new world, this will also teleport the player to the specific coordinates provided by the caller. It will not check the coordinates for correctness (like if the y isn't below the surface). If no coordinates are provided, it will select the default spawn coordinates for the new_world.

Testing

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