Collections of Queues

blocking_queue: a blocking queue for multi-producer-multi-consumer systems
- usage:
```
auto* bq = new newplan_toolkit::BlockingQueue();
```

spsc_queue: an asynchronious queue for single-producer-single-consumer systems [high-performance]

usage:

create

auto *spsc_q = new newplan_toolkit::SPSCQueue(102400);

pop

new_data = spsc_q->blocking_pop();//blocking

do {
    recv_ptr = spsc_q->front();//non-blocking
} while (recv_ptr == nullptr); 
spsc_q->pop();

Other Useful Implementations

readerwriterqueue : single-produce-single-consumer queue, https://github.com/cameron314/readerwriterqueue
concurrentqueue : multiple-produce-multiple-consumer queue, https://github.com/cameron314/concurrentqueue