Function camel_to_snake_case 

pub fn camel_to_snake_case(name: &str) -> String

Converts a camelCase string to UPPER_SNAKE_CASE

Example

use polyglot_sql::helper::camel_to_snake_case;

assert_eq!(camel_to_snake_case("camelCase"), "CAMEL_CASE");
assert_eq!(camel_to_snake_case("MyHTTPServer"), "MY_H_T_T_P_SERVER");