Add pre-commit with formatting and linting.

.pre-commit-config.yaml

@@ -0,0 +1,26 @@
+repos:
+# Flutter
+- repo: https://github.com/dluksza/flutter-analyze-pre-commit
+  rev: "4afcaa82fc368d40d486256bf4edba329bf667bb"
+  hooks:
+    - id: flutter-analyze
+      args: [lib/*]
+    - id: dart-format
+      args: [lib/*]
+
+# Python
+- repo: https://github.com/PyCQA/flake8
+  rev: 6.1.0
+  hooks:
+    - id: flake8
+      files: helper/
+- repo: https://github.com/psf/black
+  rev: 23.11.0
+  hooks:
+    - id: black
+      files: helper/
+- repo: https://github.com/PyCQA/bandit
+  rev: 1.7.5
+  hooks:
+    - id: bandit
+      files: helper/  # keep in sync with .bandit file

lib/android/tap_request_dialog.dart

@@ -160,7 +160,8 @@ class _DialogProvider {
       _DDesc.oathDeleteAccount => l10n.s_nfc_dialog_oath_delete_account,
       _DDesc.oathCalculateCode => l10n.s_nfc_dialog_oath_calculate_code,
       _DDesc.oathActionFailure => l10n.s_nfc_dialog_oath_failure,
-      _DDesc.oathAddMultipleAccounts => l10n.s_nfc_dialog_oath_add_multiple_accounts,
+      _DDesc.oathAddMultipleAccounts =>
+        l10n.s_nfc_dialog_oath_add_multiple_accounts,
       _ => ''
     };
   }

lib/exception/apdu_exception.dart

@@ -26,4 +26,3 @@ class ApduException implements Exception {
     return 'ApduException[$message; dec: $sw]';
   }
 }
-

lib/exception/cancellation_exception.dart

@@ -14,6 +14,4 @@
  * limitations under the License.
  */
 
-class CancellationException implements Exception {
-
-}
+class CancellationException implements Exception {}

lib/oath/icon_provider/icon_pack.dart

@@ -61,7 +61,8 @@ class IconPack {
         element.issuer.any((element) => element == issuer.toUpperCase()));
 
     final issuerImageFile = matching.isNotEmpty
-        ? File(join(directory.path, getLocalIconFileName(matching.first.filename)))
+        ? File(
+            join(directory.path, getLocalIconFileName(matching.first.filename)))
         : null;
 
     if (issuerImageFile != null && !issuerImageFile.existsSync()) {

lib/widgets/focus_utils.dart

@@ -1,4 +1,3 @@
-
 import 'package:flutter/cupertino.dart';
 import 'package:logging/logging.dart';