linux(i18n): add Turkish translations (#361)

* linux(i18n): add Turkish translations

- Add Qt Linguist translation infrastructure to CMakeLists.txt
- Wrap UI strings with qsTr() in Main.qml
- Wrap menu strings with tr() in trayiconmanager.cpp
- Add QTranslator loader in main.cpp for automatic locale detection
- Create Turkish translation file (librepods_tr.ts)

Translations include:
- Main window: connection status, noise control modes, settings
- Tray menu: all menu items and tooltips
- System notifications

* fix: allocate QTranslator on heap to ensure lifetime

linux/translations/librepods_tr.ts

@@ -0,0 +1,151 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE TS>
+<TS version="2.1" language="tr_TR">
+<context>
+    <name>Main</name>
+    <message>
+        <source>Connected</source>
+        <translation>Bağlı</translation>
+    </message>
+    <message>
+        <source>Disconnected</source>
+        <translation>Bağlantı Kesildi</translation>
+    </message>
+    <message>
+        <source>Off</source>
+        <translation>Kapalı</translation>
+    </message>
+    <message>
+        <source>Noise Cancellation</source>
+        <translation>Gürültü Engelleme</translation>
+    </message>
+    <message>
+        <source>Transparency</source>
+        <translation>Şeffaflık</translation>
+    </message>
+    <message>
+        <source>Adaptive</source>
+        <translation>Uyarlanabilir</translation>
+    </message>
+    <message>
+        <source>Adaptive Noise Level: </source>
+        <translation>Uyarlanabilir Gürültü Seviyesi: </translation>
+    </message>
+    <message>
+        <source>Conversational Awareness</source>
+        <translation>Konuşma Farkındalığı</translation>
+    </message>
+    <message>
+        <source>Hearing Aid</source>
+        <translation>İşitme Cihazı</translation>
+    </message>
+    <message>
+        <source>Settings</source>
+        <translation>Ayarlar</translation>
+    </message>
+    <message>
+        <source>Pause Behavior When Removing AirPods:</source>
+        <translation>AirPods Çıkarıldığında Duraklatma Davranışı:</translation>
+    </message>
+    <message>
+        <source>One Removed</source>
+        <translation>Biri Çıkarıldığında</translation>
+    </message>
+    <message>
+        <source>Both Removed</source>
+        <translation>İkisi de Çıkarıldığında</translation>
+    </message>
+    <message>
+        <source>Never</source>
+        <translation>Asla</translation>
+    </message>
+    <message>
+        <source>Cross-Device Connectivity with Android</source>
+        <translation>Android ile Çapraz Cihaz Bağlantısı</translation>
+    </message>
+    <message>
+        <source>Auto-Start on Login</source>
+        <translation>Oturum Açıldığında Otomatik Başlat</translation>
+    </message>
+    <message>
+        <source>Enable System Notifications</source>
+        <translation>Sistem Bildirimlerini Etkinleştir</translation>
+    </message>
+    <message>
+        <source>One Bud ANC Mode</source>
+        <translation>Tek Kulaklık ANC Modu</translation>
+    </message>
+    <message>
+        <source>Enable ANC when using one AirPod
+(More noise reduction, but uses more battery)</source>
+        <translation>Tek AirPod kullanırken ANC&apos;yi etkinleştir
+(Daha fazla gürültü azaltma, ancak daha fazla pil kullanır)</translation>
+    </message>
+    <message>
+        <source>Bluetooth Retry Attempts:</source>
+        <translation>Bluetooth Yeniden Deneme Sayısı:</translation>
+    </message>
+    <message>
+        <source>Rename</source>
+        <translation>Yeniden Adlandır</translation>
+    </message>
+    <message>
+        <source>Change Phone MAC</source>
+        <translation>Telefon MAC Adresini Değiştir</translation>
+    </message>
+    <message>
+        <source>Show Magic Cloud Keys QR</source>
+        <translation>Magic Cloud Anahtarları QR&apos;ını Göster</translation>
+    </message>
+</context>
+<context>
+    <name>TrayIconManager</name>
+    <message>
+        <source>Battery Status: </source>
+        <translation>Pil Durumu: </translation>
+    </message>
+    <message>
+        <source>Open</source>
+        <translation>Aç</translation>
+    </message>
+    <message>
+        <source>Settings</source>
+        <translation>Ayarlar</translation>
+    </message>
+    <message>
+        <source>Toggle Conversational Awareness</source>
+        <translation>Konuşma Farkındalığını Aç/Kapat</translation>
+    </message>
+    <message>
+        <source>Adaptive</source>
+        <translation>Uyarlanabilir</translation>
+    </message>
+    <message>
+        <source>Transparency</source>
+        <translation>Şeffaflık</translation>
+    </message>
+    <message>
+        <source>Noise Cancellation</source>
+        <translation>Gürültü Engelleme</translation>
+    </message>
+    <message>
+        <source>Off</source>
+        <translation>Kapalı</translation>
+    </message>
+    <message>
+        <source>Quit</source>
+        <translation>Çıkış</translation>
+    </message>
+</context>
+<context>
+    <name>AirPodsTrayApp</name>
+    <message>
+        <source>AirPods Disconnected</source>
+        <translation>AirPods Bağlantısı Kesildi</translation>
+    </message>
+    <message>
+        <source>Your AirPods have been disconnected</source>
+        <translation>AirPods&apos;unuzun bağlantısı kesildi</translation>
+    </message>
+</context>
+</TS>