Function a_star

pub fn a_star<P, M, HeuristicFn, SuccessorsFn, SuccessFn>(
    start: P,
    heuristic: HeuristicFn,
    successors: SuccessorsFn,
    success: SuccessFn,
    min_timeout: PathfinderTimeout,
    max_timeout: PathfinderTimeout,
) -> Path<P, M>
where
    P: Eq + Hash + Copy + Debug,
    HeuristicFn: Fn(P) -> f32,
    SuccessorsFn: FnMut(P) -> Vec<Edge<P, M>>,
    SuccessFn: Fn(P) -> bool,