Translate app UI from Turkish to English

Translates string resources, hardcoded layout text and user-facing
strings in Java sources (toasts, dialogs, status labels, upload log).

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

app/src/unstable/java/com/evsuite/abrp/OtaUpdater.java

@@ -359,7 +359,7 @@ final class OtaUpdater {
         try {
             DownloadManager.Request request = new DownloadManager.Request(Uri.parse(update.apkUrl))
                     .setTitle("FatihsMG4 " + update.versionName)
-                    .setDescription("Güncelleme indiriliyor")
+                    .setDescription("Downloading update")
                     .setNotificationVisibility(DownloadManager.Request.VISIBILITY_VISIBLE_NOTIFY_COMPLETED)
                     .setDestinationInExternalPublicDir(Environment.DIRECTORY_DOWNLOADS, publicName)
                     .setAllowedOverMetered(true)