Create 0977-squares-of-a-sorted-array.swift

[drxlx]

• File(s) Modified: 0977-squares-of-a-sorted-array.swift
• Language(s) Used: swift
• Submission URL: https://leetcode.com/problems/squares-of-a-sorted-array/submissions/1207137139/

Important

Please make sure the file name is lowercase and a duplicate file does not already exist before merging.