Method push

src/fl/stl/priority_queue.h:85–88

    PriorityQueue(const Compare &comp, memory_resource* resource) : _data(resource), _comp(comp) {}

    void push(const T &value) {
        _data.push_back(value);
        push_heap(_data.begin(), _data.end(), _comp);
    }

    void push(T &&value) {
        _data.push_back(fl::move(value));