Hi Sergi
Certainly I don't have time to do this myself, at least not until the end of the year. And I wouldn't want to make it an integral part of CodeRunner as I feel it's not really where CodeRunner is targetted. But I think it would be a fun extra plugin to have available via coderunner.org.nz.
The user-level documentation of the UIs is here.
The JavaScript for the existing plugins is in the amd/src folder,
with the compressed versions in amd/build. All code has to conform
to Moodle amd
module standards. Converting existing code to that standard
can be anywhere between very difficult and relatively easy,
depending on how it's written. The API for my CodeRunner UI
plugins is documented in the module userinterfacewrapper.js.
Have fun!
Richard