add 'New Playlist' button to Playlists page

backend/mediaprovider/jellyfin/jellyfinmediaprovider.go

@@ -1,6 +1,7 @@
 package jellyfin
 
 import (
+	"errors"
 	"image"
 	"io"
 	"math"
@@ -77,7 +78,7 @@ func (j *jellyfinMediaProvider) SetLibrary(id string) error {
 	return nil
 }
 
-func (j *jellyfinMediaProvider) CreatePlaylist(name string, trackIDs []string) error {
+func (j *jellyfinMediaProvider) CreatePlaylistWithTracks(name string, trackIDs []string) error {
 	return j.client.CreatePlaylist(name, trackIDs)
 }
 
@@ -93,6 +94,10 @@ func (j *jellyfinMediaProvider) EditPlaylist(id, name, description string, publi
 	return j.client.UpdatePlaylistMetadata(id, name, description)
 }
 
+func (j *jellyfinMediaProvider) CreatePlaylist(name, description string, public bool) error {
+	return errors.New("unimplemented")
+}
+
 func (j *jellyfinMediaProvider) AddPlaylistTracks(id string, trackIDsToAdd []string) error {
 	return j.client.AddSongsToPlaylist(id, trackIDsToAdd)
 }