Create code file for TechnoLux AC (#885)

* Create code file for TechnoLux AC

These are codes for the TechnoLux KFR-25GW/F, an obscure uzbek AC I somehow ended up with.

* Rename 6666.json to 4800.json

Co-authored-by: Vassilis Panos <4130346+vassilis-panos@users.noreply.github.com>