Create documentation generated by rdoc with GitHub Actions

[hsbt]

for #75

[Copilot]

Pull Request Overview

This PR adds a new RDoc documentation generation task to the Rakefile and introduces a GitHub Actions workflow to build and deploy the generated documentation to GitHub Pages.

• Adds an RDoc::Task in the Rakefile with a rescue block for the dependency.
• Creates a new workflow file (gh-pages.yml) that sets up, builds, and deploys the RDoc site.

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
Rakefile	Introduces a new RDoc::Task block to generate documentation.
.github/workflows/gh-pages.yml	Adds a GitHub Actions workflow for building and deploying docs.

Comments suppressed due to low confidence (1)

.github/workflows/gh-pages.yml:5

• Verify that the branch filter ('master') aligns with the repository's default branch to ensure that deployments trigger as intended.

branches: [ 'master' ]

[Copilot]

Consider logging a warning in the rescue block to indicate that documentation generation is skipped due to a missing dependency, instead of failing silently.

Suggested change

	rescue LoadError
	rescue LoadError
	warn "Warning: 'rdoc/task' is not available. Skipping documentation generation."

[shugo]

@hsbt I've merged it. Thank you!

[hsbt]

👌