feat: add CI/CD makefile targets for testing and coverage

[2PykeETH]

Summary

This PR introduces CI/CD automation targets in the Makefile to streamline testing and coverage reporting in continuous integration environments.

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Changes

makefile

• Added CI/CD section with new targets:

  • ci-test → runs tests in CI environment (skips fork tests)
  • ci-coverage → generates a summarized coverage report for CI

• Structured with a dedicated CI/CD section header for clarity

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Benefits

• Enables consistent automated testing in CI pipelines
• Provides coverage insights directly in CI output
• Improves maintainability by centralizing developer and CI commands in the Makefile

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Next Steps

• Integrate these targets into GitHub Actions / CI pipeline
• Add artifacts upload step for full coverage reports if needed
• Expand with gas reporting or lint checks for CI