HLS: set target bitrate / AVPlayer: higher resolution

HLS: try matching the set resolution. This works okay with AVPlayer. With MPV it is hit and miss, most of the time MPV targets the highest available bitrate, instead of the set bitrate.

AVPlayer now supports higher resolution up to 1080p60.

Shared/Constants.swift

@@ -5,6 +5,23 @@ import SwiftUI
 enum Constants {
     static let yatteeProtocol = "yattee://"
     static let overlayAnimation = Animation.linear(duration: 0.2)
+
+    static var isAppleTV: Bool {
+        #if os(iOS)
+            UIDevice.current.userInterfaceIdiom == .tv
+        #else
+            false
+        #endif
+    }
+
+    static var isMac: Bool {
+        #if os(iOS)
+            UIDevice.current.userInterfaceIdiom == .mac
+        #else
+            false
+        #endif
+    }
+
     static var isIPhone: Bool {
         #if os(iOS)
             UIDevice.current.userInterfaceIdiom == .phone