Add common workflows and files

[lucacome]

This pull request includes several significant changes to the configuration and workflows of the project. The changes focus on adding new GitHub Actions workflows, updating the README file, and removing the Travis CI configuration.

Configuration and Workflow Updates:

• .editorconfig: Added configuration to enforce consistent coding styles, including charset, end-of-line, and indentation settings.
• .github/release.yml: Added a release configuration to categorize changes and exclude specific labels from the changelog.
• .github/workflows/ci.yml: Introduced a new CI workflow to build and test the project on different Go versions, and create/update draft releases.
• .github/workflows/codeql.yml: Added CodeQL analysis workflow to perform security and quality checks on the codebase.
• .github/workflows/dependency-review.yml: Added a dependency review workflow to analyze dependencies on pull requests.
• .github/workflows/labeler.yml: Added a pull request labeler workflow to automatically label pull requests based on their content.

Documentation Updates:

• README.md: Updated the badges to reflect the new CI status, Go Report Card, and Go version. Also, improved the section headers for serialization and deserialization examples. [1] [2] [3] [4]

Removal of Travis CI:

• .travis.yml: Removed the Travis CI configuration as the project has transitioned to GitHub Actions for continuous integration.

[github-advanced-security]

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