Improve album cover loader, lyrics search and streaming support

- Improve album cover loader
- Add album cover loader result struct
- Move album cover thumbnail scaling to album cover loader
- Make init art manual look for album cover images in song directory
- Make album cover search work for songs outside of collection and
  streams
- Make album cover search work based on artist + title if album is not
  present
- Update art manual in playlist for local files, devices and CDDA
- Make lyrics search work for streams
- Add stream dialog to menu
- Remove dead code in InternetSearchModel
- Simplify code in InternetSearchView

src/covermanager/tidalcoverprovider.cpp

@@ -52,13 +52,15 @@ const char *TidalCoverProvider::kResourcesUrl = "https://resources.tidal.com";
 const int TidalCoverProvider::kLimit = 10;
 
 TidalCoverProvider::TidalCoverProvider(Application *app, QObject *parent) : 
-  CoverProvider("Tidal", 2.0, true, app, parent),
+  CoverProvider("Tidal", 2.0, true, false, app, parent),
   service_(app->internet_services()->Service<TidalService>()),
   network_(new NetworkAccessManager(this)) {
 
 }
 
-bool TidalCoverProvider::StartSearch(const QString &artist, const QString &album, const int id) {
+bool TidalCoverProvider::StartSearch(const QString &artist, const QString &album, const QString &title, const int id) {
+
+  Q_UNUSED(title);
 
   if (!service_ || !service_->authenticated()) return false;