VLCMediaLibraryManager: Rename playlists getter

SharedSources/MediaLibraryModel/PlaylistModel.swift

@@ -25,7 +25,7 @@ class PlaylistModel: MLBaseModel {
     required init(medialibrary: VLCMediaLibraryManager) {
         self.medialibrary = medialibrary
         medialibrary.addObserver(self)
-        files = medialibrary.getPlaylists()
+        files = medialibrary.playlists()
     }
 
     func append(_ item: VLCMLPlaylist) {

SharedSources/VLCMediaLibraryManager.swift

@@ -331,7 +331,7 @@ extension VLCMediaLibraryManager {
         return medialib.deletePlaylist(withIdentifier: identifier)
     }
 
-    func getPlaylists(sortingCriteria sort: VLCMLSortingCriteria = .default, desc: Bool = false) -> [VLCMLPlaylist] {
+    func playlists(sortingCriteria sort: VLCMLSortingCriteria = .default, desc: Bool = false) -> [VLCMLPlaylist] {
         return medialib.playlists(with: sort, desc: desc)
     }
 }