Efficient Awk Function for JSON Parsing

This code implements a robust Awk function designed to parse JSON data and extract the value associated with a specified key. It handles nested objects and arrays, supports dot-separated key paths, and gracefully manages various JSON data types. Leveraging Awk's string manipulation capabilities, the function efficiently traverses the JSON structure, locating the target key and returning its corresponding value, showcasing Awk's power in data processing.