Support for YANG trees (RFC8340, optionnaly RFC8791)

[dylanbob]

Hi and thank you for your open source work.

Are you planning on supporting the common YANG tree syntax, as defined in RFC8340? (and extended in RFC8791). How hard would that be from your existing implementation?

The language name would be "YANG tree", and a potential (not normalized) file extension would be .yangtree (for automatic detection).

Cheers