David/driver history csv route

[ludavidca]

JIRA ticket link

Driver history CSV export

Implementation description

• Finalized api requirements with PM
• Completed Implementation of API Route to export CSV file with filtering
• Added line to utils in csv to ensure that insertion order is preserved

Steps to test

1. Seed the database
2. Call api with params driver_id = all and current year

What should reviewers focus on?

• If overall implementation makes sense

Checklist

• My PR name is descriptive and in imperative tense
• My commit messages are descriptive and in imperative tense. My commits are atomic and trivial commits are squashed or fixup'd into non-trivial commits
• I have requested a review from the PL, as well as other devs who have background knowledge on this PR or who will be building on top of this PR

[Copilot]

Pull Request Overview

This PR implements a CSV export feature for driver history data, allowing users to export driving distance records for all drivers across two consecutive years. The implementation includes filtering by year and preserves field insertion order in the CSV output.

Key Changes:

• Added a new API endpoint /drivers/{driver_id}/history/{year}/export that generates and streams CSV files
• Implemented DriverHistoryCSVGenerator service to handle CSV generation logic with custom sorting
• Enhanced CSV utility to preserve field insertion order using dict.fromkeys()

Reviewed Changes

Copilot reviewed 4 out of 5 changed files in this pull request and generated 2 comments.

File	Description
backend/python/app/utilities/csv_utils.py	Modified field name extraction to preserve insertion order instead of using unordered set
backend/python/app/services/implementations/driver_history_service.py	Added get_driver_history_by_year() method to query driver histories by year
backend/python/app/services/implementations/driver_history_csv_service.py	New service class implementing CSV generation logic with sorting and formatting
backend/python/app/routers/driver_history_routes.py	Added new export endpoint with validation for "all" driver_id parameter

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[ColinToft]

LGTM, just a couple comments!