Bounded Pool Executor

Bounded Pool Executor is a Python library that provides `BoundedThreadPoolExecutor` and `BoundedProcessPoolExecutor` classes, extending `concurrent.futures` to manage a fixed-size queue for tasks. This prevents memory exhaustion that can occur with the standard unbounded queues in `concurrent.futures` when submitting a large number of tasks. The current version is 0.0.3, offering a solution to prevent memory leaks in high-concurrency scenarios by blocking `submit` calls when the queue is full.