Add cookie management translations to all languages

Added new translation keys for cookie management features (recommended, file applied, browser applied, cleared messages) to all supported language files for improved internationalization and user feedback.

languages/en.json

@@ -105,6 +105,7 @@
     "cookie_source": "Cookie Source",
     "use_cookie_file": "Use cookie file",
     "extract_from_browser": "Extract from browser",
+    "recommended": "Recommended",
     "cookie_file": "Cookie File",
     "cookie_file_placeholder": "Path to cookies.txt file...",
     "browser_selection": "Browser Selection",
@@ -115,7 +116,13 @@
     "browser_extract_message": "Browser cookies will be extracted when applied",
     "file_selected_message": "Cookie file selected - Click OK to apply",
     "select_file_title": "Select Cookie File",
-    "file_filter": "Cookies files (*.txt *.lwp)"
+    "file_filter": "Cookies files (*.txt *.lwp)",
+    "file_selected_title": "Cookie File Applied",
+    "file_applied_message": "Cookie file applied: {path}",
+    "browser_selected_title": "Browser Cookies Applied",
+    "browser_applied_message": "Browser cookies will be extracted from: {browser}",
+    "cleared_title": "Cookies Cleared",
+    "cleared_message": "Cookie settings have been cleared"
   },
   "custom_command": {
     "help_text": "Enter your custom yt-dlp command below. The current URL will be appended automatically.<br><br>For the full list of options and usage examples, <a href=\"{docs_url}\">click here to view the official yt-dlp documentation</a>.<br><br>Note: Download path and filename template will be handled automatically.",