Function format 

pub fn format(
    args: Vec<ObjectExpression>,
    call_span: Span,
) -> Result<ObjectExpression>

Format builtin function. It takes a string as first argument and a list of arguments to format.

If the number of arguments is not the same as the number of {} in the string, it will return an error.

Example

println<format<"Hello {}"><["Awiteb"]>>;
// Hello Awiteb