feat: add toolbar position setting and update email viewer layout

- Introduced a new setting for toolbar position in appearance settings, allowing users to choose between 'top' and 'below-subject'.
- Updated the EmailViewer component to conditionally render the toolbar based on the selected position.
- Enhanced the UI for the toolbar with action buttons for replying, archiving, and deleting emails.
- Added translations for the new toolbar position setting in multiple languages.

locales/de/common.json

@@ -487,6 +487,12 @@
       "animations": {
         "label": "Animationen aktivieren",
         "description": "Weiche Übergänge und Effekte anzeigen"
+      },
+      "toolbar_position": {
+        "label": "Symbolleistenposition",
+        "description": "Wo die E-Mail-Aktionsschaltflächen angezeigt werden (Antworten, Archivieren, Löschen usw.)",
+        "top": "Oben",
+        "below_subject": "Unter dem Betreff"
       }
     },
     "keywords": {

locales/en/common.json

@@ -499,6 +499,12 @@
       "animations": {
         "label": "Enable Animations",
         "description": "Show smooth transitions and effects"
+      },
+      "toolbar_position": {
+        "label": "Toolbar Position",
+        "description": "Where to show email action buttons (Reply, Archive, Delete, etc.)",
+        "top": "Top",
+        "below_subject": "Below subject"
       }
     },
     "keywords": {

locales/es/common.json

@@ -487,6 +487,12 @@
       "animations": {
         "label": "Habilitar Animaciones",
         "description": "Mostrar transiciones y efectos suaves"
+      },
+      "toolbar_position": {
+        "label": "Posición de la barra de herramientas",
+        "description": "Dónde mostrar los botones de acción del correo (Responder, Archivar, Eliminar, etc.)",
+        "top": "Arriba",
+        "below_subject": "Debajo del asunto"
       }
     },
     "keywords": {

locales/fr/common.json

@@ -487,6 +487,12 @@
       "animations": {
         "label": "Activer les animations",
         "description": "Afficher les transitions et effets fluides"
+      },
+      "toolbar_position": {
+        "label": "Position de la barre d'outils",
+        "description": "Où afficher les boutons d'action des e-mails (Répondre, Archiver, Supprimer, etc.)",
+        "top": "En haut",
+        "below_subject": "Sous l'objet"
       }
     },
     "keywords": {

locales/it/common.json

@@ -487,6 +487,12 @@
       "animations": {
         "label": "Abilita animazioni",
         "description": "Mostra transizioni ed effetti fluidi"
+      },
+      "toolbar_position": {
+        "label": "Posizione barra degli strumenti",
+        "description": "Dove mostrare i pulsanti azione e-mail (Rispondi, Archivia, Elimina, ecc.)",
+        "top": "In alto",
+        "below_subject": "Sotto l'oggetto"
       }
     },
     "keywords": {

locales/ja/common.json

@@ -487,6 +487,12 @@
       "animations": {
         "label": "アニメーションを有効にする",
         "description": "スムーズな遷移とエフェクトを表示"
+      },
+      "toolbar_position": {
+        "label": "ツールバーの位置",
+        "description": "メールアクションボタン（返信、アーカイブ、削除など）の表示位置",
+        "top": "上部",
+        "below_subject": "件名の下"
       }
     },
     "keywords": {

locales/nl/common.json

@@ -487,6 +487,12 @@
       "animations": {
         "label": "Animaties inschakelen",
         "description": "Vloeiende overgangen en effecten tonen"
+      },
+      "toolbar_position": {
+        "label": "Werkbalkpositie",
+        "description": "Waar de e-mailactieknoppen worden weergegeven (Beantwoorden, Archiveren, Verwijderen, enz.)",
+        "top": "Bovenaan",
+        "below_subject": "Onder het onderwerp"
       }
     },
     "keywords": {

locales/pt/common.json

@@ -487,6 +487,12 @@
       "animations": {
         "label": "Habilitar Animações",
         "description": "Mostrar transições e efeitos suaves"
+      },
+      "toolbar_position": {
+        "label": "Posição da barra de ferramentas",
+        "description": "Onde mostrar os botões de ação do e-mail (Responder, Arquivar, Excluir, etc.)",
+        "top": "Topo",
+        "below_subject": "Abaixo do assunto"
       }
     },
     "keywords": {