Merge Two Interval Lists

Given two sorted lists of intervals, merge these two lists into one non-overlapping interval list. Each interval is represented by two integers, a start value and an end value, and the resulting list should be sorted by start values with no overlaps. Implement a function to perform the merge operation. Input First list: List[List[int]] representing the first sorted interval list. Second list: List[List[int]] representing the second sorted interval list. Output List[List[int]] representing the merged interval list. Sample Input intervals1 = [[1, 3], [5, 6], [8, 10]] intervals2 = [[2, 4], [7, 9]] Sample Output [[1, 4], [5, 6], [7, 10]] Example Input intervals1 = [[1, 3], [5, 6], [8, 10]] intervals2 = [[2, 4], [7, 9]]