Change sound backend from Qt to miniaudio (#4334)

Thanks Greenlandicsmiley, Nerixyz, Yoitsu, and helmak for helping debug & test this

* Remove QMediaPlayer includes

* Prefer local path when generating the sound path

* Update changelog entry number

* Disable pitch & spatialization control

src/controllers/notifications/NotificationController.cpp

@@ -5,6 +5,7 @@
 #include "common/Outcome.hpp"
 #include "common/QLogging.hpp"
 #include "controllers/notifications/NotificationModel.hpp"
+#include "controllers/sound/SoundController.hpp"
 #include "messages/Message.hpp"
 #include "providers/twitch/api/Helix.hpp"
 #include "providers/twitch/TwitchIrcServer.hpp"
@@ -21,7 +22,6 @@
 
 #include <QDesktopServices>
 #include <QDir>
-#include <QMediaPlayer>
 #include <QUrl>
 
 #include <unordered_set>
@@ -97,25 +97,13 @@ void NotificationController::removeChannelNotification(
 }
 void NotificationController::playSound()
 {
-    static auto player = new QMediaPlayer;
-    static QUrl currentPlayerUrl;
-
     QUrl highlightSoundUrl =
         getSettings()->notificationCustomSound
             ? QUrl::fromLocalFile(
                   getSettings()->notificationPathSound.getValue())
             : QUrl("qrc:/sounds/ping2.wav");
 
-    // Set media if the highlight sound url has changed, or if media is buffered
-    if (currentPlayerUrl != highlightSoundUrl ||
-        player->mediaStatus() == QMediaPlayer::BufferedMedia)
-    {
-        player->setMedia(highlightSoundUrl);
-
-        currentPlayerUrl = highlightSoundUrl;
-    }
-
-    player->play();
+    getApp()->sound->play(highlightSoundUrl);
 }
 
 NotificationModel *NotificationController::createModel(QObject *parent,