Function awint_macro_internals::parse_usb

pub fn parse_usb(ast: &Ast, usb_txt: PText) -> Result<Usb, CCMacroError>

In ranges we commonly see stuff like (x + y) or (x - y) with one of them being a constant we can parse, which passes upward the Usb and Usbr chain to get calculated into a static width.