Add MPV deinterlace filter setting

Fix #601

Model/Import Export Settings/Exporters/AdvancedSettingsGroupExporter.swift

@@ -9,6 +9,7 @@ final class AdvancedSettingsGroupExporter: SettingsGroupExporter {
             "mpvEnableLogging": Defaults[.mpvEnableLogging],
             "mpvCacheSecs": Defaults[.mpvCacheSecs],
             "mpvCachePauseWait": Defaults[.mpvCachePauseWait],
+            "mpvDeinterlace": Defaults[.mpvDeinterlace],
             "showCacheStatus": Defaults[.showCacheStatus],
             "feedCacheSize": Defaults[.feedCacheSize]
         ]

Model/Import Export Settings/Importers/AdvancedSettingsGroupImporter.swift

@@ -25,6 +25,10 @@ struct AdvancedSettingsGroupImporter {
             Defaults[.mpvCachePauseWait] = mpvCachePauseWait
         }
 
+        if let mpvDeinterlace = json["mpvDeinterlace"].bool {
+            Defaults[.mpvDeinterlace] = mpvDeinterlace
+        }
+
         if let showCacheStatus = json["showCacheStatus"].bool {
             Defaults[.showCacheStatus] = showCacheStatus
         }

Model/Player/Backends/MPVClient.swift

@@ -67,6 +67,7 @@ final class MPVClient: ObservableObject {
         checkError(mpv_set_option_string(mpv, "hwdec", machine == "x86_64" ? "no" : "auto-safe"))
         checkError(mpv_set_option_string(mpv, "vo", "libmpv"))
         checkError(mpv_set_option_string(mpv, "demuxer-lavf-analyzeduration", "1"))
+        checkError(mpv_set_option_string(mpv, "deinterlace", Defaults[.mpvDeinterlace] ? "yes" : "no"))
 
         checkError(mpv_initialize(mpv))