Merge pull request #26405 from kaingwade:rename_features2d

Rename features2d #26405

This PR renames the module _features2d_ to _features_ as one of the Big OpenCV Cleanup #25007. 
Related PR: opencv/opencv_contrib: [#3820](https://github.com/opencv/opencv_contrib/pull/3820) opencv/ci-gha-workflow: [#192](https://github.com/opencv/ci-gha-workflow/pull/192)

modules/python/src2/hdr_parser.py

@@ -14,7 +14,7 @@ opencv_hdr_list = [
 "../../3d/include/opencv2/3d.hpp",
 "../../stereo/include/opencv2/stereo.hpp",
 "../../calib/include/opencv2/calib.hpp",
-"../../features2d/include/opencv2/features2d.hpp",
+"../../features/include/opencv2/features.hpp",
 "../../video/include/opencv2/video/tracking.hpp",
 "../../video/include/opencv2/video/background_segm.hpp",
 "../../objdetect/include/opencv2/objdetect.hpp",

modules/python/test/test_features.py

@@ -6,7 +6,7 @@ import cv2 as cv
 
 from tests_common import NewOpenCVTests
 
-class Features2D_Tests(NewOpenCVTests):
+class Features_Tests(NewOpenCVTests):
 
     def test_issue_13406(self):
         self.assertEqual(True, hasattr(cv, 'drawKeypoints'))