Better deterministic formatting

[smoser]

I love gofmt. I love that I don't ever think about formatting go code. The computer does it and I accept it.

I'm probably not the only one who has toyed with editing melange files with a program.

wolfi-dev/os#29368 is an example PR that I made by editing melange yaml with ruamel. It does a pretty good job of not rewriting the whole thing (like 'yaml.dump' would do). But it still had some random changes like :

-     3.10: "310"
-     3.11: "311"
+     3.10: '310'
+     3.11: '311'

or

- epoch: 1
+ description: "SentencePiece is an unsupervised text tokenizer and detokenizer"
- epoch: 2
+ description: SentencePiece is an unsupervised text tokenizer and detokenizer

I'd like to just run 'yam' and have it remove all those changes.