New context with albums and lyrics +++ much more

* Added new lyrics provider with lyrics from AudD and API Seeds
* New improved context widget with albums and lyrics
* Fixed playing and context widget getting stuck in play mode when there was an error
* Changed icons for artists in collection, tidal and cover manager
* Removed "search" icon from "Search automatically" checkbox (right click) that looked ugly
* Removed some unused widgets from the src/widgets directory
* Fixed initial size of window and side panel
* Fixed saving window size correctly

src/engine/enginebase.h

@@ -41,6 +41,7 @@
 
 #include "engine_fwd.h"
 #include "enginetype.h"
+#include "enginedevice.h"
 
 namespace Engine {
 
@@ -119,6 +120,8 @@ public:
 
   static const int kScopeSize = 1024;
 
+  QVariant device() { return device_; }
+
 public slots:
   virtual void SetEqualizerEnabled(bool) {}
   virtual void SetEqualizerParameters(int preamp, const QList<int> &bandGains) {}