Split a list of integers into smaller batches of a specified size. The last batch may contain fewer elements if the list size is not evenly divisible by the batch size. This is particularly useful for processing large datasets in chunks to respect Salesforce governor limits.

The method signature is: public static List<List<Integer>> chunkList(List<Integer> inputList, Integer batchSize)

Examples:

Input: inputList = [1, 2, 3, 4, 5], batchSize = 2 Output: [[1, 2], [3, 4], [5]] Explanation: The list is split into batches of size 2, with the last batch containing the remaining 1 element Input: inputList = [1, 2, 3, 4, 5, 6], batchSize = 3 Output: [[1, 2, 3], [4, 5, 6]] Explanation: The list is evenly divisible by the batch size, resulting in 2 complete batches Input: inputList = [1, 2], batchSize = 5 Output: [[1, 2]] Explanation: The batch size is larger than the list, so the entire list becomes one batch
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