Constant lexical_parse_integer::format::RUBY_STRING

pub const RUBY_STRING: u128 = NumberFormatBuilder::new().digit_separator(num::NonZeroU8::new(b'_')).no_special(true).internal_digit_separator(true).build(); // 202_824_096_038_269_144_926_504_985_035_788u128

Number format to parse a Ruby float from string.