Create conftest to oves test_nuitka_binary.py to the end of testing

Moves test_nuitka_binary.py to the end and fails if the file is missing.

tests/conftest.py

@@ -0,0 +1,27 @@
+import pytest
+import os
+
+def pytest_collection_modifyitems(config, items):
+    """
+    Moves test_nuitka_binary.py to the end and fails if the file is missing.
+    """
+    target_file = "test_nuitka_binary.py"
+    
+    # Sanity Check: Ensure the file actually exists in the tests directory
+    test_dir = os.path.join(config.rootdir, "tests")
+    file_path = os.path.join(test_dir, target_file)
+    
+    if not os.path.exists(file_path):
+        pytest.exit(f"\n[FATAL] Required test file '{target_file}' not found in {test_dir}. "
+                    f"Order enforcement failed!", returncode=1)
+
+    nuitka_tests = []
+    remaining_tests = []
+
+    for item in items:
+        if target_file in item.nodeid:
+            nuitka_tests.append(item)
+        else:
+            remaining_tests.append(item)
+
+    items[:] = remaining_tests + nuitka_tests