Add Periphery configuration, remove unused code

Model/InvidiousAPI.swift

@@ -171,10 +171,6 @@ final class InvidiousAPI: Service, ObservableObject {
         resource(baseURL: account.url, path: "\(InvidiousAPI.basePath)/auth/feed")
     }
 
-    var stats: Resource {
-        resource(baseURL: account.url, path: basePathAppending("stats"))
-    }
-
     var subscriptions: Resource {
         resource(baseURL: account.url, path: basePathAppending("auth/subscriptions"))
     }

Model/NavigationModel.swift

@@ -11,8 +11,6 @@ final class NavigationModel: ObservableObject {
     @Published var showingVideo = false
     @Published var video: Video?
 
-    @Published var returnToDetails = false
-
     @Published var presentingAddToPlaylist = false
     @Published var videoToAddToPlaylist: Video!
 

Model/RecentsModel.swift

@@ -4,10 +4,6 @@ import Foundation
 final class RecentsModel: ObservableObject {
     @Default(.recentlyOpened) var items
 
-    var isEmpty: Bool {
-        items.isEmpty
-    }
-
     func clear() {
         items = []
     }

Model/Stream.swift

@@ -87,18 +87,6 @@ class Stream: Equatable, Hashable {
         assets.dropFirst().allSatisfy { $0 == assets.first }
     }
 
-    var assetsLoaded: Bool {
-        assets.allSatisfy { $0.statusOfValue(forKey: "playable", error: nil) == .loaded }
-    }
-
-    var loadedAssets: [AVURLAsset] {
-        assets.filter { $0.statusOfValue(forKey: "playable", error: nil) == .loaded }
-    }
-
-    func cancelLoadingAssets() {
-        assets.forEach { $0.cancelLoading() }
-    }
-
     static func == (lhs: Stream, rhs: Stream) -> Bool {
         lhs.resolution == rhs.resolution && lhs.kind == rhs.kind
     }