74. Chunk Array

Implement chunk - split an array into contiguous sub-arrays of a fixed size.

Requirements

1) Input

• Accept an array items and a chunk size size.

2) Output behavior

• Return a new array of chunks in the same element order.
• Each chunk has at most size elements.
• The final chunk may be shorter when there are not enough remaining items.

3) Edge cases

• If items is empty, return [].
• If size <= 0, return [].
• If size is larger than the input length, return one chunk containing all elements.