Implement receiver HID++ connect/disconnect events

Many changes were made here but that was the biggest one.

There's currently a bug where std::system_error: Broken pipe is thrown
after launching the daemon with a receiver connector.

A workaround for this bug is to simply shake the mouse while starting
the daemon. I will investigate this soon.

src/logid/Device.h

@@ -14,6 +14,8 @@ namespace logid
     {
     public:
         Device(std::string path, backend::hidpp::DeviceIndex index);
+        Device(const std::shared_ptr<backend::raw::RawDevice>& raw_device,
+                backend::hidpp::DeviceIndex index);
         void wakeup();
         void sleep();
     private: