jsonMinify method
Minifies this JSON string by removing whitespace
Returns the minified JSON string or null if parsing fails
Example:
final pretty = '''
{
"name": "John",
"age": 30
}
''';
print(pretty.jsonMinify()); // {"name":"John","age":30}
Implementation
String? jsonMinify() {
return QJSONUtils.minify(this);
}