[strides][safe] Add boundary checks for values of NDArrayStrides + better docstrings

[forfudan]

This PR aims to add all necessary boundary checks for NDArrayStrides to ensure safe use.

• Add boundary checks for ndim > 0 at initialization.
• Add complete docstrings for all methods of Shape type, e.g., raises, args, returns.
• Chain calling __init__(shape: NDArrayShape, order: String) for other list-like shape argument.
• Fix __eq__ method.
• Add new initialization method to create an uninitialized strides with given length.