Builtin YAML support

[LiberaTeMetuMortis]

What is the problem this feature will solve?

Tons of devs are using YAML instead of JSON because it is a easier to configure and it is a lot more readable. But when we try to use it in Bun we had to use external libraries.

What is the feature you are proposing to solve the problem?

Some builtin functions like YAML.parse() and YAML.stringify() would solve this.

What alternatives have you considered?

No response

[Jarred-Sumner]

Yes I think bun should do this

[JL102]

YAML is fairly complex; would builtin support add a significant amount of storage space utilization?

[robogeek]

There are plenty of YAML packages already - will maintaining YAML as part of the platform be worth the effort?