[ feature request ] Support RCL and KCL

[yonas]

https://rcl-lang.org/

• a delight to use

https://www.kcl-lang.io/

• very feature-rich

Both have Rust libraries.

Related Issues

• Re-evaluate default features #621

[epage]

There serde compatible APIs for these?

[yonas]

@epage I'm not sure, I'l check it out.