refactor: adopt UIScene lifecycle

feat: add initial support for pip

feat: add setting toggle for pip

fix: let os handle invokation of pip which is more reliable

fix: UIScene compatibility with airplay

fix: black screen on external display when on app view and streaming

fix: incorrect window size when launched directly on external display

fix: wrong resolution shown in settings when in stream session

Enable gamemode flag for iOS18+

Explicitly enters pip mode when in background

VoidLink/Database/TemporarySettings.m

@@ -41,6 +41,7 @@
     assert([self.audioConfig intValue] != 0);
     self.preferredCodec = (typeof(self.preferredCodec))[[NSUserDefaults standardUserDefaults] integerForKey:@"preferredCodec"];
     self.enableYUV444 = [[NSUserDefaults standardUserDefaults] boolForKey:@"enableYUV444"];
+    self.enablePIP = [[NSUserDefaults standardUserDefaults] boolForKey:@"enablePIP"];
     self.useFramePacing = [[NSUserDefaults standardUserDefaults] integerForKey:@"useFramePacing"] != 0;
     self.playAudioOnPC = [[NSUserDefaults standardUserDefaults] boolForKey:@"audioOnPC"];
     self.enableHdr = [[NSUserDefaults standardUserDefaults] boolForKey:@"enableHdr"];
@@ -82,6 +83,7 @@
     self.audioConfig = settings.audioConfig;
     self.preferredCodec = settings.preferredCodec;
     self.enableYUV444 = settings.enableYUV444;
+    self.enablePIP = settings.enablePIP;
     self.useFramePacing = settings.useFramePacing;
     self.playAudioOnPC = settings.playAudioOnPC;
     self.enableHdr = settings.enableHdr;