Finalize repo QA compliance

[BTT21000]

As part of the TM issue https://github.com/api3dao/tasks/issues/849 for QA, some requirements need to be addressed:

Repo setup requirements as per new_repo_creation_checklist.md:

• Add standard configuration files (in this case eslint, ...) as per standard requirements and other repositories.
• Add the relevant license file (LICENSE.md) consistent with the organizational standards or project requirements.

Package setup requirements as per new_package_creation_checklist.md:

• Edit the README.md as needed so that it looks well presented on www.npmjs.com, and provides a clear and comprehensive description about the package, including installation instructions, usage examples, and any other relevant information. Package update changesets should not be included in the README.md.
• Implement unit tests and add a testing framework (e.g., Jest, Mocha) if applicable.
• Customize Continuous Integration (CI) workflows to run package-specific tests, linting, and other checks on each commit. Ensure these workflows are optimized for the npm package development cycle.
• Add relevant package.json fields as applicable (e.g. such that repo links and - in this specific case - keywords show up in NPM, compare this to this)
• Review the renovate.json configuration file to ensure it satisfies the package requirements and align with our dependency management strategy.
• Verify the setup of security vulnerability scanning tools (e.g. Renovate) for the codebase and dependencies.