Implemented persisting of channel/note for each pad

synthisizer.h

@@ -4,9 +4,13 @@
 
 namespace midi { class MidiMessage; }
 
+class DrumMachineSettings;
+
 class Synthisizer
 {
 public:
+    void loadSettings(const DrumMachineSettings &settings);
+
     void setFrequency(int16_t frequency) { m_frequency = frequency; }
 
     void writeSamples(frame_t *begin, frame_t *end);