Merge pull request #29073 from abhishek-gola:disk_feature_extractor

Added DISK feature extractor support #29073

closes: https://github.com/opencv/opencv/issues/27083
Merge with: https://github.com/opencv/opencv_extra/pull/1368/

### Pull Request Readiness Checklist

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/features/test/test_main.cpp

@@ -7,4 +7,11 @@
     #include <hpx/hpx_main.hpp>
 #endif
 
-CV_TEST_MAIN("cv")
+static
+void initTests()
+{
+    cvtest::addDataSearchEnv("OPENCV_DNN_TEST_DATA_PATH");
+    cvtest::addDataSearchSubDirectory("");  // override "cv" prefix below to access without "../dnn" hacks
+}
+
+CV_TEST_MAIN("cv", initTests())