Adds template for custom path saving results (#755)
## Pull Request Overview
This PR adds support for using a custom template to determine where evaluation results are saved. The changes include adding a new parameter "results_path_template" across multiple main modules and updating the EvaluationTracker to honor this template for saving results; the associated tests and documentation have been updated accordingly.
- Added a new test for the custom results template.
- Extended CLI options in several main modules to accept "results_path_template".
- Updated EvaluationTracker logic and documentation to reflect the new functionality.
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Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>
