feat: enhance E2E testing setup and model reporting

- Added a new fixture to manage runtime report artifacts in a writable temp directory during E2E tests, addressing permission issues in local CI/dev environments.
- Updated `conftest.py` to include a requirements.txt file in the model packaging path for training activities.
- Refactored existing fixtures to use `pytest.fixture` instead of `pytest_asyncio.fixture` for better compatibility.
- Enhanced the `Reports` class to include a target alias for report metrics, ensuring compatibility with Evidently's reporting requirements.
- Introduced new test scenarios to validate the handling of missing and whitespace-only `date_column` inputs in the training workflow.

These changes improve the robustness of the E2E testing framework and enhance the clarity of model reporting metrics.

tests/activities/test_cleanup.py

@@ -125,7 +125,7 @@ def test_cleanup_temp_directories_nonexistent_path(
         notification_handler=mock_notification_handler,
         metrics_controller=mock_metrics_controller,
     )
-    cleanup._emit_metrics = MagicMock()
+    cleanup._emit_metrics = MagicMock()  # type: ignore[method-assign]
     cleanup.warning = MagicMock()
 
     cleanup.cleanup_temp_directories({'temp_path': '/nonexistent/path', 'metadata': {}})
@@ -152,7 +152,7 @@ def test_cleanup_temp_directories_success_with_deletions(
         notification_handler=mock_notification_handler,
         metrics_controller=mock_metrics_controller,
     )
-    cleanup._emit_metrics = MagicMock()
+    cleanup._emit_metrics = MagicMock()  # type: ignore[method-assign]
 
     old_time = (datetime.now() - timedelta(hours=48)).strftime('%Y%m%d_%H%M%S_000000')
     old_dir = os.path.join(temp_dir, f'old_dir_{old_time}')
@@ -187,7 +187,7 @@ def test_cleanup_temp_directories_dry_run(
         notification_handler=mock_notification_handler,
         metrics_controller=mock_metrics_controller,
     )
-    cleanup._emit_metrics = MagicMock()
+    cleanup._emit_metrics = MagicMock()  # type: ignore[method-assign]
 
     old_time = (datetime.now() - timedelta(hours=48)).strftime('%Y%m%d_%H%M%S_000000')
     old_dir = os.path.join(temp_dir, f'old_dir_{old_time}')
@@ -217,7 +217,7 @@ def test_cleanup_temp_directories_delete_error(
         notification_handler=mock_notification_handler,
         metrics_controller=mock_metrics_controller,
     )
-    cleanup._emit_metrics = MagicMock()
+    cleanup._emit_metrics = MagicMock()  # type: ignore[method-assign]
     cleanup.error = MagicMock()
 
     old_time = (datetime.now() - timedelta(hours=48)).strftime('%Y%m%d_%H%M%S_000000')
@@ -276,7 +276,7 @@ def test_cleanup_temp_directories_with_files_and_unmatched_dirs(
         notification_handler=mock_notification_handler,
         metrics_controller=mock_metrics_controller,
     )
-    cleanup._emit_metrics = MagicMock()
+    cleanup._emit_metrics = MagicMock()  # type: ignore[method-assign]
     cleanup.debug = MagicMock()
 
     # Create a file and a directory with a non-matching name
@@ -310,7 +310,7 @@ def test_cleanup_temp_directories_invalid_timestamp_format(
         notification_handler=mock_notification_handler,
         metrics_controller=mock_metrics_controller,
     )
-    cleanup._emit_metrics = MagicMock()
+    cleanup._emit_metrics = MagicMock()  # type: ignore[method-assign]
     cleanup.error = MagicMock()
 
     # Create a directory with a malformed timestamp that matches the regex but fails parsing
@@ -340,7 +340,7 @@ def test_cleanup_temp_directories_generic_exception(
         notification_handler=mock_notification_handler,
         metrics_controller=mock_metrics_controller,
     )
-    cleanup._emit_metrics = MagicMock()
+    cleanup._emit_metrics = MagicMock()  # type: ignore[method-assign]
     cleanup.send_notification = MagicMock()
 
     with patch('os.listdir', side_effect=Exception('Unexpected OS Error')):