feat(localization): update contact settings translations for multiple languages

- Translated contact settings and related strings in Slovenian, Swedish, Ukrainian, Chinese, Dutch, Polish, Portuguese, Russian, and Slovak.
- Added new strings for discovered contacts actions such as adding, copying, and deleting contacts.
- Enhanced the DiscoveryContact model to include a rawPacket field for better data handling.
- Updated the contacts screen to support new actions in the context menu for discovered contacts.
- Improved the contact discovery store to handle the serialization of the new rawPacket field.

lib/connector/meshcore_protocol.dart

@@ -114,25 +114,27 @@ class BufferWriter {
   }
 
   void writeHex(String hex) {
-    // Validate hex string length is even and not empty
-    if (hex.isEmpty || hex.length % 2 != 0) {
-      throw FormatException('Invalid hex string length: ${hex.length}');
-    }
-    List<int> result = [];
-    for (int i = 0; i < hex.length ~/ 2; i++) {
-      final hexByte = hex.substring(i * 2, i * 2 + 2);
-      final byte = int.tryParse(hexByte, radix: 16);
-      if (byte == null) {
-        throw FormatException(
-          'Invalid hex characters at position $i: $hexByte',
-        );
-      }
-      result.add(byte);
-    }
-    writeBytes(Uint8List.fromList(result));
+    writeBytes(hex2Uint8List(hex));
   }
 }
 
+Uint8List hex2Uint8List(String hex) {
+  // Validate hex string length is even and not empty
+  if (hex.isEmpty || hex.length % 2 != 0) {
+    throw FormatException('Invalid hex string length: ${hex.length}');
+  }
+  List<int> result = [];
+  for (int i = 0; i < hex.length ~/ 2; i++) {
+    final hexByte = hex.substring(i * 2, i * 2 + 2);
+    final byte = int.tryParse(hexByte, radix: 16);
+    if (byte == null) {
+      throw FormatException('Invalid hex characters at position $i: $hexByte');
+    }
+    result.add(byte);
+  }
+  return Uint8List.fromList(result);
+}
+
 // Command codes (to device)
 const int cmdAppStart = 1;
 const int cmdSendTxtMsg = 2;
@@ -827,10 +829,10 @@ Uint8List buildExportContactFrame(Uint8List pubKey) {
 
 // Build a import contact frame
 // [cmd][contact_frame x98+]
-Uint8List buildImportContactFrame(String contactFrame) {
+Uint8List buildImportContactFrame(Uint8List contactFrame) {
   final writer = BufferWriter();
   writer.writeByte(cmdImportContact);
-  writer.writeHex(contactFrame);
+  writer.writeBytes(contactFrame);
   return writer.toBytes();
 }