SIENTIAPDE-1231

Update .gitignore and refactor metrics.py for improved logging and consistency

- Added coverage.xml to .gitignore to prevent tracking of coverage reports.
- Refactored metric labels in metrics.py for consistency in string formatting and improved readability.
- Enhanced logging messages in various activities to ensure uniformity in message formatting.

mlruns/models/test/meta.yaml

@@ -0,0 +1,5 @@
+aliases: {}
+creation_timestamp: 1760447068191
+description: null
+last_updated_timestamp: 1760447068191
+name: test