Add aliases str_to_map and mapFromString to extractKeyValuePairs

Why it matters

To improve usability and discoverability by providing more intuitive and descriptive function names for extracting key-value pairs from strings, making it easier for users to parse map-like string data.

How to use it

Users can now use either str_to_map or mapFromString in place of extractKeyValuePairs in their SQL queries to extract key-value pairs from strings. For example:

SELECT str_to_map('key1=value1,key2=value2')

or

SELECT mapFromString('key1=value1,key2=value2')