fix(#34): add site

[maxonfjvipon]

Ref: #34

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PR-Codex overview

Focus of the PR

Update the README.md, pom.xml, and site files for the INEO Maven Plugin.

Detailed summary

• Added a link to the Maven site in the README.md file.
• Added a 404 page in the src/site/apt/404.apt.vm file.
• Added content to the index.apt.vm file explaining how to use the plugin.
• Updated the URL in the pom.xml file.
• Added a GitHub Actions workflow file for generating the site.
• Added a site.xml file with project details and menu items for the site.

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[maxonfjvipon]

@rultor merge

[rultor]

@rultor merge

@maxonfjvipon OK, I'll try to merge now. You can check the progress of the merge here

[rultor]

@rultor merge

@maxonfjvipon Done! FYI, the full log is here (took me 7min)