feat(VocabPracticeDialog): implement SRS session management and enhance UI feedback

- Added support for spaced repetition system (SRS) session management, allowing users to resume practice sessions with due items.
- Introduced new UI elements to display SRS session status, including total due, completed, and remaining items.
- Enhanced localization for SRS-related messages in multiple languages, improving user experience and clarity.
- Updated methods for saving and loading SRS session data to local storage, ensuring persistence across sessions.

frontend/src/i18n/locales/en/socialnetwork.json

@@ -452,6 +452,9 @@
                 "wrong": "Wrong.",
                 "acceptable": "Acceptable answers:",
                 "stats": "Stats",
+                "dueToday": "Due today",
+                "done": "Done",
+                "remaining": "Remaining",
                 "success": "Success",
                 "fail": "Fail",
                 "srsRateTitle": "How solid did it feel?",
@@ -462,7 +465,9 @@
                 "srsGood": "Good",
                 "srsGoodHint": "normal schedule",
                 "srsEasy": "Easy",
-                "srsEasyHint": "longer interval"
+                "srsEasyHint": "longer interval",
+                "srsFinishedTitle": "Done for today",
+                "srsFinishedDesc": "You have practiced all due items from this round. When new items become due later, you can continue here."
             },
             "search": {
                 "open": "Search",