Add Allow Software-Decoded Formats playback setting

Lets the auto stream selector pick formats whose codec isn't hardware
decoded on the current device. Defaults off; when on, 4K VP9/AV1 can be
auto-selected on Apple TV models without those decoders. Software-decoded
streams also move into the Recommended section so the selection stays
visible without enabling advanced stream details.

Yattee/Views/Player/QualitySelectorView+StreamHelpers.swift

@@ -92,17 +92,21 @@ extension QualitySelectorView {
     }
 
     /// Recommended video streams (hardware-decodable codecs).
+    /// When `allowSoftwareDecodedFormats` is ON, all video streams are considered recommended.
     var recommendedVideoStreams: [Stream] {
         videoStreams.filter { (stream: Stream) -> Bool in
             if stream.url.isFileURL { return true }
             if stream.isMuxed { return true }
+            if allowSoftwareDecodedFormats { return true }
             return !requiresSoftwareDecode(stream.videoCodec)
         }
     }
 
     /// Other video streams (software decode required).
+    /// Empty when `allowSoftwareDecodedFormats` is ON — those streams are now recommended.
     var otherVideoStreams: [Stream] {
-        videoStreams.filter { (stream: Stream) -> Bool in
+        if allowSoftwareDecodedFormats { return [] }
+        return videoStreams.filter { (stream: Stream) -> Bool in
             if stream.url.isFileURL { return false }
             if stream.isMuxed { return false }
             return requiresSoftwareDecode(stream.videoCodec)

Yattee/Views/Player/QualitySelectorView.swift

@@ -71,6 +71,12 @@ struct QualitySelectorView: View {
         appEnvironment?.settingsManager.showAdvancedStreamDetails ?? false
     }
 
+    /// Whether the user has opted in to software-decoded formats during auto-selection.
+    /// When enabled, software-decoded streams are treated as recommended (no split).
+    var allowSoftwareDecodedFormats: Bool {
+        appEnvironment?.settingsManager.allowSoftwareDecodedFormats ?? false
+    }
+
     // MARK: - Computed Properties
 
     /// Available tabs based on streams