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/test/test_features.py

@@ -0,0 +1,18 @@
+#!/usr/bin/env python
+from __future__ import print_function
+
+import numpy as np
+import cv2 as cv
+
+from tests_common import NewOpenCVTests
+
+class Features_Tests(NewOpenCVTests):
+
+    def test_issue_13406(self):
+        self.assertEqual(True, hasattr(cv, 'drawKeypoints'))
+        self.assertEqual(True, hasattr(cv, 'DrawMatchesFlags_NOT_DRAW_SINGLE_POINTS'))
+        self.assertEqual(True, hasattr(cv, 'DRAW_MATCHES_FLAGS_NOT_DRAW_SINGLE_POINTS'))
+
+
+if __name__ == '__main__':
+    NewOpenCVTests.bootstrap()