* Add any plugin

This adds the any plugin, a plain copy of coredns/any documented here
https://coredns.io/explugins/any/ as an external plugin.

Fixes: #2785
Signed-off-by: Miek Gieben <miek@miek.nl>

* Stickler bot nit
Signed-off-by: Miek Gieben <miek@miek.nl>