**Todo** * Implement a interface to access/control AVM smart home devices * This interface should make use of the existing config interface * Implement the following API methods: - [x] getswitchlist - [x] setswitchon - [x] setswitchoff - [x] setswitchtoggle - [x] getswitchstate - [x] getswitchpresent - [ ] ~~getswitchpower~~ (no test device for this, no use case) - [ ] ~~getswitchenergy~~ (no test device for this, no use case) - [x] getswitchname - [ ] ~~gettemperature~~ (no test device for this, no use case) Is blocked by: #1