Add Piped support

Model/PlaylistsModel.swift

@@ -4,10 +4,15 @@ import SwiftUI
 
 final class PlaylistsModel: ObservableObject {
     @Published var playlists = [Playlist]()
-    @Published var api = InvidiousAPI()
 
     @Published var selectedPlaylistID: Playlist.ID = ""
 
+    var accounts = AccountsModel()
+
+    var api: InvidiousAPI {
+        accounts.invidious
+    }
+
     init(_ playlists: [Playlist] = [Playlist]()) {
         self.playlists = playlists
     }