refactor: enhance localization support in chat and voice input features

- Integrated localization for various dialog messages and UI elements in the chat and voice input components.
- Updated the confirmation dialog to utilize localized strings for delete messages, improving user experience across different languages.
- Enhanced voice input sheet to reflect localized text for status updates, action buttons, and prompts, ensuring consistency in user interactions.
- Improved the file attachment widget to display the attachment label in a localized manner, enhancing accessibility for users in different regions.
- Streamlined localization management by centralizing string retrieval, promoting maintainability and clarity in the codebase.

lib/l10n/app_fr.arb

@@ -127,12 +127,24 @@
   "onboardQuickBullet2": "Lancez Nouveau chat ou gérez les modèles depuis la barre"
   ,
   "addAttachment": "Ajouter une pièce jointe",
+  "attachmentLabel": "Pièce jointe",
   "tools": "Outils",
   "voiceInput": "Entrée vocale",
+  "voice": "Voix",
+  "voiceStatusListening": "Écoute…",
+  "voiceStatusRecording": "Enregistrement…",
+  "voiceHoldToTalk": "Maintenir pour parler",
+  "voiceAutoSend": "Envoi automatique",
+  "voiceTranscript": "Transcription",
+  "voicePromptSpeakNow": "Parlez maintenant…",
+  "voicePromptTapStart": "Appuyez sur \"Démarrer\" pour commencer",
+  "voiceActionStop": "Arrêter",
+  "voiceActionStart": "Démarrer",
   "messageInputLabel": "Saisie du message",
   "messageInputHint": "Saisissez votre message",
   "messageHintText": "Message...",
   "stopGenerating": "Arrêter la génération",
+  "codeCopiedToClipboard": "Code copié dans le presse-papiers.",
   "send": "Envoyer",
   "sendMessage": "Envoyer le message",
   "file": "Fichier",
@@ -289,6 +301,9 @@
   "appCustomization": "Personnalisation de l'app",
   "appCustomizationSubtitle": "Personnalisez l'affichage des noms et de l'UI",
   "quickActionsDescription": "Choisissez jusqu'à deux raccourcis à épingler près du champ de saisie",
+  "chatSettings": "Discussion",
+  "sendOnEnter": "Envoyer avec Entrée",
+  "sendOnEnterDescription": "Entrée envoie (clavier logiciel). Cmd/Ctrl+Entrée aussi disponible",
   "display": "Affichage",
   "realtime": "Temps réel",
   "transportMode": "Mode de transport",