sandbag
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add Brazilian grades
https://en.wikipedia.org/wiki/Grade_(climbing)#Brazilian https://www.cap.com.br/post/sistema-brasileiro-de-gradua%C3%A7%C3%A3o-de-vias-de-escalada
todo:
- [x]
BrazilianCrux
scale: done in #158 - [ ] #161
- [ ] #162
- [ ] #163
- [ ] #169