Improve admin settings UI components

- Add EditIcon component to icons.tsx
- Enhance SettingInput with textarea for long/JSON values
- Improve SettingRow styling and long value handling
- Fix CORE category translation (Ядро → Бот)
- Add auto-resize for textarea and Ctrl+Enter save shortcut

src/locales/ru.json

@@ -1191,7 +1191,7 @@
         "POSTGRES": "PostgreSQL",
         "SQLITE": "SQLite",
         "REDIS": "Redis",
-        "CORE": "Ядро",
+        "CORE": "Бот",
         "REMNAWAVE": "RemnaWave",
         "SERVER_STATUS": "Статус сервера",
         "MONITORING": "Мониторинг",