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/core/main.cpp

@@ -200,9 +200,6 @@ int main(int argc, char* argv[]) {
 
   // Resources
   Q_INIT_RESOURCE(data);
-  
-  // Icons
-  IconLoader::Init();
 
   Application app;