Add subclass for decompressed arrays

Following [this comment](https://github.com/data-apis/array-api/discussions/968#discussioncomment-14350012), add a thinly wrapped native Blosc2 class for decompressed arrays, which are currently just plain NumPy arrays. Would have to support certain additional operations and comparisons (``==``, ``__array_namespace__()``), but it will inherit most of the useful machinery directly from NumPy.

Would have to change ``np.empty`` references for loading slices etc. from C functions in the code base, possibly some other things.

首先追踪解压数组的创建方式，以及 C 函数在加载切片时使用 np.empty 的位置。在定义子类行为之前，检查现有的原生 Blosc2 和 NumPy 数组机制。完成的标准是：解压数组支持 ==、__array_namespace__()、所需的其他操作和比较，并且受影响的加载路径已更新。

由索引模型根据 Issue 内容生成。