ENH: Add comprehensive tests for itk.Image buffer protocol and lifetime

Add three test suites with automatic feature detection so they can be
cherry-picked into ITKv5.4.5 — tests for unavailable features are
skipped with descriptive messages rather than failing.

Feature detection at runtime:
  - hasattr(image, '__buffer__'):          PEP 688 (ITK 6.x)
  - hasattr(image, '__array_interface__'): NumPy v3 interface (ITK 6.x)
  - image.__array__(copy=None):            NumPy 2.0 copy param (ITK 6.x)
  - np.asarray zero-copy mutation test:    zero-copy support (ITK 6.x)

itkImageTest.py (25-27 assertions depending on Python version):
  - Basic __array__() and np.asarray() [all ITK versions]
  - __buffer__() PEP 688: 2D/3D, UC/SS/F [skip if unavailable]
  - memoryview(image) auto-dispatch [skip if Python < 3.12]
  - np.asarray zero-copy mutation [skip if unavailable]
  - __array__(copy=None/True/False) [skip if unavailable]

itkImageLifetimeTest.py (54-56 assertions):
  - Deep copy: np.array(copy=True), array_from_image [all versions]
  - __array__() zero-copy lifetime [skip if unavailable]
  - np.asarray del-image safety [skip if unavailable]
  - __buffer__/memoryview lifetime [skip if unavailable]
  - Chained refs: slice, transpose, ravel [skip if unavailable]
  - Filter pipeline output lifetime [skip if unavailable]
  - Weak reference GC verification [skip if unavailable]
  - Reference count verification [skip if unavailable]
  - Circular reference detection [all versions]
  - RSS memory growth (200x cycles) [all versions]

itkImageInteropTest.py (37 assertions when fully supported):
  - NumPy: CT/MRI/DWI clinical sizes [all versions]
  - Zero-copy assertions gated on HAS_ZEROCOPY [skip if unavailable]
  - __array__(copy=...) protocol gated on HAS_ARRAY_COPY_PARAM
  - PyTorch: 14 tests [optional, skip if not installed]
  - Dask: 9 tests [optional, skip if not installed]

Co-Authored-By: Hans J. Johnson <hans-johnson@uiowa.edu>
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: hjmjohnson

Modules/Core/Common/wrapping/test/CMakeLists.txt

@@ -56,4 +56,14 @@ if(ITK_WRAP_PYTHON)
     COMMAND
       ${CMAKE_CURRENT_SOURCE_DIR}/itkSpatialOrientationAdapterTest.py
   )
+  itk_python_add_test(
+    NAME itkImageInteropPythonTest
+    COMMAND
+      ${CMAKE_CURRENT_SOURCE_DIR}/itkImageInteropTest.py
+  )
+  itk_python_add_test(
+    NAME itkImageLifetimePythonTest
+    COMMAND
+      ${CMAKE_CURRENT_SOURCE_DIR}/itkImageLifetimeTest.py
+  )
 endif()