Add a strict option to itertools.batched()

[rhettinger]

This is modeled on the strict option for zip().

One use case is improving the reshape() recipe. In numpy, a reshape will raise an exception if the new dimensions do not exactly fit the data.

Linked PRs

• gh-113202: Add a strict option to itertools.batched() #113203
• gh-113202: Add whatsnew entry for the batched() strict option. #115889