add seedsigner keystore import

src/main/java/com/sparrowwallet/sparrow/control/WalletImportDialog.java

@@ -47,7 +47,7 @@ public class WalletImportDialog extends Dialog<Wallet> {
         AnchorPane.setRightAnchor(scrollPane, 0.0);
 
         importAccordion = new Accordion();
-        List<KeystoreFileImport> keystoreImporters = List.of(new ColdcardSinglesig(), new CoboVaultSinglesig(), new KeystoneSinglesig(), new PassportSinglesig());
+        List<KeystoreFileImport> keystoreImporters = List.of(new ColdcardSinglesig(), new CoboVaultSinglesig(), new KeystoneSinglesig(), new PassportSinglesig(), new SeedSigner(), new SpecterDIY());
         for(KeystoreFileImport importer : keystoreImporters) {
             FileWalletKeystoreImportPane importPane = new FileWalletKeystoreImportPane(importer);
             importAccordion.getPanes().add(importPane);

src/main/java/com/sparrowwallet/sparrow/io/SeedSigner.java

@@ -0,0 +1,20 @@
+package com.sparrowwallet.sparrow.io;
+
+import com.sparrowwallet.drongo.wallet.WalletModel;
+
+public class SeedSigner extends SpecterDIY {
+    @Override
+    public String getName() {
+        return "SeedSigner";
+    }
+
+    @Override
+    public String getKeystoreImportDescription() {
+        return "Import QR created on your SeedSigner by selecting Generate XPUB in the Signing Tools menu. Note that SeedSigner currently only supports P2WSH Multisig wallets.";
+    }
+
+    @Override
+    public WalletModel getWalletModel() {
+        return WalletModel.SEEDSIGNER;
+    }
+}

src/main/java/com/sparrowwallet/sparrow/keystoreimport/HwAirgappedController.java

@@ -16,9 +16,9 @@ public class HwAirgappedController extends KeystoreImportDetailController {
     public void initializeView() {
         List<KeystoreFileImport> importers = Collections.emptyList();
         if(getMasterController().getWallet().getPolicyType().equals(PolicyType.SINGLE)) {
-            importers = List.of(new ColdcardSinglesig(), new CoboVaultSinglesig(), new KeystoneSinglesig(), new PassportSinglesig(), new SpecterDIY());
+            importers = List.of(new ColdcardSinglesig(), new CoboVaultSinglesig(), new KeystoneSinglesig(), new PassportSinglesig(), new SeedSigner(), new SpecterDIY());
         } else if(getMasterController().getWallet().getPolicyType().equals(PolicyType.MULTI)) {
-            importers = List.of(new ColdcardMultisig(), new CoboVaultMultisig(), new KeystoneMultisig(), new PassportMultisig(), new SpecterDIY());
+            importers = List.of(new ColdcardMultisig(), new CoboVaultMultisig(), new KeystoneMultisig(), new PassportMultisig(), new SeedSigner(), new SpecterDIY());
         }
 
         for(KeystoreImport importer : importers) {