Library: Add missing MediaLibrary overrides

The recent changes in MediaLibrary API have introduced some more virtual functions, which were not implemented in Library, hence building VLMC was giving compile time errors. This patch adds empty definitions for those functions.
This also resolves the issue #35.

src/Library/Library.cpp

@@ -339,3 +339,23 @@ void Library::onPlaylistsModified( std::vector<medialibrary::PlaylistPtr> )
 void Library::onPlaylistsDeleted( std::vector<int64_t> )
 {
 }
+
+void Library::onReloadStarted( const std::string& entryPoint )
+{
+}
+
+void Library::onReloadCompleted( const std::string& entryPoint )
+{
+}
+
+void Library::onEntryPointRemoved( const std::string& entryPoint, bool success )
+{
+}
+
+void Library::onEntryPointBanned( const std::string& entryPoint, bool success )
+{
+}
+
+void Library::onEntryPointUnbanned( const std::string& entryPoint, bool success )
+{
+}

src/Library/Library.h

@@ -107,6 +107,11 @@ private:
     virtual void onPlaylistsAdded( std::vector<medialibrary::PlaylistPtr> playlists ) override;
     virtual void onPlaylistsModified( std::vector<medialibrary::PlaylistPtr> playlists ) override;
     virtual void onPlaylistsDeleted( std::vector<int64_t> playlistIds ) override;
+    virtual void onReloadStarted( const std::string& entryPoint ) override;
+    virtual void onReloadCompleted( const std::string& entryPoint ) override;
+    virtual void onEntryPointRemoved( const std::string& entryPoint, bool success ) override;
+    virtual void onEntryPointBanned( const std::string& entryPoint, bool success ) override;
+    virtual void onEntryPointUnbanned( const std::string& entryPoint, bool success ) override;
 
 private:
     std::unique_ptr<medialibrary::IMediaLibrary>    m_ml;