Resolved build warnings in test service and added linting tools

[ruokun-niu]

• Resolved all warnings in the test service
• Add a pre-commit hook for running cargo fmt
• Added a lint-check make target for checking cargo fmt and cargo clippy
• Added a GH workflow that checks the lint of the code

[Copilot]

Pull Request Overview

This PR resolves build warnings in the test service and introduces linting infrastructure across the framework.

• Reformats web API code to eliminate style and warning issues.
• Adds lint-check Makefile targets and a pre-commit hook for cargo fmt.
• Creates a GitHub Actions workflow to enforce formatting and linting on push and PRs.

Reviewed Changes

Copilot reviewed 17 out of 17 changed files in this pull request and generated no comments.

File	Description
e2e-test-framework/test-service/src/web_api/sources.rs	Reformatted routing calls and added trailing commas to fix warnings
e2e-test-framework/test-service/Makefile	Added lint-check target to run cargo fmt and cargo clippy
.github/workflows/lint.yml	New workflow to run formatting and lint checks on CI
README.md	Added instructions for enabling Git hooks for code quality checks

Comments suppressed due to low confidence (3)

.github/workflows/lint.yml:45

• [nitpick] Pinning the checkout action to a full commit SHA can make future updates harder; consider using a version tag like actions/checkout@v4 to follow non-breaking updates more easily.

        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332 # v4.1.7

README.md:11

• [nitpick] Consider adding instructions for running the new make lint-check target and referencing the GitHub Actions lint workflow to ensure contributors validate formatting and lint rules locally and in CI.

git config core.hooksPath .githooks

.github/workflows/lint.yml:74

• The CI workflow runs lint checks but doesn't run tests; consider adding a cargo test step to ensure code changes are covered by the existing test suite.

            make lint-check