feat: Add TCP connection support and UI integration

- Implemented TCP transport service for native platforms.
- Added TCP connection screen with input fields for host and port.
- Integrated TCP connection options into the scanner and USB screens.
- Updated localization files for new TCP-related strings.
- Added tests for TCP connection flow and error handling.
- Enhanced USB screen to include TCP connection option.
- Improved layout to ensure no overflow in narrow widths for scanner and USB screens.

lib/l10n/app_fr.arb

@@ -1859,5 +1859,33 @@
   "usbConnectionFailed": "Échec de la connexion USB : {error}",
   "usbStatus_connecting": "Connexion au périphérique USB...",
   "usbStatus_searching": "Recherche de périphériques USB...",
-  "usbErrorConnectTimedOut": "La connexion a expiré. Assurez-vous que l'appareil dispose du firmware USB Companion."
+  "usbErrorConnectTimedOut": "La connexion a expiré. Assurez-vous que l'appareil dispose du firmware USB Companion.",
+  "@tcpStatus_connectingTo": {
+    "placeholders": {
+      "endpoint": {
+        "type": "String"
+      }
+    }
+  },
+  "@tcpConnectionFailed": {
+    "placeholders": {
+      "error": {
+        "type": "String"
+      }
+    }
+  },
+  "tcpHostLabel": "Adresse IP",
+  "connectionChoiceTcpLabel": "TCP",
+  "tcpScreenTitle": "Établir une connexion via TCP",
+  "tcpHostHint": "192.168.40.10",
+  "tcpPortLabel": "Port",
+  "tcpPortHint": "5000",
+  "tcpStatus_notConnected": "Entrez l'adresse de destination et connectez-vous.",
+  "tcpStatus_connecting": "Connexion au point de terminaison TCP...",
+  "tcpStatus_connectingTo": "Connexion à {endpoint}...",
+  "tcpErrorHostRequired": "Une adresse IP est obligatoire.",
+  "tcpErrorPortInvalid": "La taille du port doit être comprise entre 1 et 65535.",
+  "tcpErrorUnsupported": "Le protocole TCP n'est pas pris en charge sur cette plateforme.",
+  "tcpErrorTimedOut": "La connexion TCP a expiré.",
+  "tcpConnectionFailed": "Échec de la connexion TCP : {error}"
 }