feat(reset): add ability to pass checkout options to reset(...) API method

test/reset_test.dart

@@ -50,6 +50,30 @@ void main() {
       expect(diff.deltas.length, 1);
     });
 
+    test('resets with provided checkout options', () {
+      expect(file.readAsStringSync(), 'Feature edit\n');
+
+      repo.reset(
+        oid: repo[sha],
+        resetType: GitReset.hard,
+        strategy: {GitCheckout.conflictStyleZdiff3},
+        pathspec: ['feature_file'],
+      );
+
+      expect(file.readAsStringSync(), isEmpty);
+    });
+
+    test('throws when trying to reset and error occurs', () {
+      expect(
+        () => repo.reset(
+          oid: repo[sha],
+          resetType: GitReset.hard,
+          checkoutDirectory: '',
+        ),
+        throwsA(isA<LibGit2Error>()),
+      );
+    });
+
     group('resetDefault', () {
       test('updates entry in the index', () {
         file.writeAsStringSync('new edit');