Add community health files, update docs as needed.

[chrisreddington]

This pull request introduces several updates to improve project governance, documentation, and community engagement for the gh-game repository. Key changes include adding a CODE_OF_CONDUCT.md, CONTRIBUTING.md, and other community-related files, as well as updating the README.md and LICENSE files to reflect the new maintainership by GitHub. Below are the most important changes:

Governance and Community Guidelines:

• Added a CODE_OF_CONDUCT.md file based on the Contributor Covenant to establish community standards and expectations for behavior.
• Added a SECURITY.md file to outline the process for reporting security vulnerabilities and GitHub's safe harbor policy.
• Added a SUPPORT.md file to guide users on how to file issues and seek help effectively.

Contributor Experience:

• Introduced a comprehensive CONTRIBUTING.md file with detailed instructions for setting up the development environment, contributing code or non-code changes, and following the pull request process.

Documentation Updates:

• Enhanced the README.md with a new "Features" section, updated installation instructions, and clarified the maintainers of the project. [1] [2]

Repository Ownership and Licensing:

• Updated the CODEOWNERS file to specify @chrisreddington as the repository maintainer.
• Updated the LICENSE file to reflect GitHub, Inc. as the copyright holder.

[Copilot]

Pull Request Overview

This PR introduces community health documentation and updates existing docs to reflect new governance and maintainership by GitHub.

• Adds SUPPORT.md, SECURITY.md, CONTRIBUTING.md, CODE_OF_CONDUCT.md, and CODEOWNERS for project governance and contributor guidance
• Enhances README.md with new Features, Requirements, and Contributing sections
• Updates LICENSE to reflect GitHub, Inc. ownership

Reviewed Changes

Copilot reviewed 7 out of 7 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
SUPPORT.md	Added guidelines for filing issues and seeking help
SECURITY.md	Added security reporting process and policy links
README.md	Expanded Features, Installation, Requirements, and Contributing sections
LICENSE	Updated copyright holder to GitHub, Inc.
CONTRIBUTING.md	Introduced detailed contribution workflow and standards
CODE_OF_CONDUCT.md	Added Contributor Covenant code of conduct
CODEOWNERS	Specified @chrisreddington as repo maintainer

Comments suppressed due to low confidence (1)

README.md:7

• [nitpick] Game names in the Features list are inconsistently capitalized. Consider using title case (e.g., “Coin Toss”, “Higher or Lower”, “Rock Paper Scissors”, “Tic Tac Toe”).

- **Multiple Games**: Play coin toss, higher or lower, rock paper scissors, tic tac toe, and word guess games