Merge pull request #26937 from MaximSmolskiy:support-bool-type-for-filestorage-base64

Support bool type for FileStorage Base64 #26937

### Pull Request Readiness Checklist

OpenCV extra: https://github.com/opencv/opencv_extra/pull/1238

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [x] The PR is proposed to the proper branch
- [x] There is a reference to the original bug report and related work
- [x] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
- [x] The feature is well documented and sample code can be built with the project CMake

modules/python/test/test_filestorage_io.py

@@ -125,11 +125,17 @@ class filestorage_io_test(NewOpenCVTests):
         cn = 3
 
         image = np.zeros((rows, cols, cn), dtype)
-        image[:] = (1, 2, 127)
+        if dtype != bool:
+            image[:] = (1, 2, 127)
+        else:
+            image[:] = (False, True, False)
 
         for i in range(rows):
             for j in range(cols):
-                image[i, j, 1] = (i + j) % 256
+                if dtype != bool:
+                    image[i, j, 1] = (i + j) % 256
+                else:
+                    image[i, j, 1] = (i + j) % 2 != 0
 
         return image
 
@@ -178,6 +184,7 @@ class filestorage_io_test(NewOpenCVTests):
 
         mats = {'normal_2d_mat_u8': self.get_normal_2d_mat(np.uint8),
                 'normal_2d_mat_u32': self.get_normal_2d_mat(np.uint32),
+                'normal_2d_mat_bool': self.get_normal_2d_mat(bool),
                 'normal_nd_mat': self.get_normal_nd_mat(),
                 'empty_2d_mat': self.get_empty_2d_mat(),
                 'random_mat': self.get_random_mat()}