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.

model_manager/sientia/reports.py

@@ -111,8 +111,14 @@ class Reports:
         ]
         self.metrics.extend(metrics)
         if run:
+            mapping = ColumnMapping()
+            mapping.target = self.target_name
             report = Report(metrics=metrics, options=self.options)
-            report.run(reference_data=self.ref_data, current_data=self.cur_data)
+            report.run(
+                reference_data=self.ref_data,
+                current_data=self.cur_data,
+                column_mapping=mapping,
+            )
             self.sections['data_quality'] = report.as_dict()
             if self.base_path:
                 # Note: Relies on Evidently's save_html() to properly manage file I/O
@@ -128,8 +134,14 @@ class Reports:
         """
         self.metrics.append(DataDriftPreset(columns=columns))
         if run:
+            mapping = ColumnMapping()
+            mapping.target = self.target_name
             report = Report(metrics=[DataDriftPreset(columns=columns)], options=self.options)
-            report.run(reference_data=self.ref_data, current_data=self.cur_data)
+            report.run(
+                reference_data=self.ref_data,
+                current_data=self.cur_data,
+                column_mapping=mapping,
+            )
             self.sections['data_drift'] = report.as_dict()
             if self.base_path:
                 # Note: Relies on Evidently's save_html() to properly manage file I/O