Add webforJ to Web Frameworks

[hyyan]

Suggestion type

• Project
• Resource

Checklist

• I searched the list and existing issues for duplicates.
• I changed README_SOURCE.md, not the generated README.md.
• This pull request contains one suggestion.
• The suggestion is relevant to Java or the JVM and fits its chosen category.
• I used the canonical project or resource link.
• The suggestion is current and maintained.
• The concise, neutral description explains its distinguishing value and ends with punctuation.
• Licensing is clear and any restrictive terms are disclosed where applicable.

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Adds webforJ to Web Frameworks. Full-stack Java platform, MIT licensed, documented at docs.webforj.com.

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Summary by cubic

Adds webforJ to Web Frameworks so users can discover a server-driven, full‑stack Java option. Docs-only change with no behavior impact.

• Adds one line to README_SOURCE.md under Web Frameworks using the canonical link: https://github.com/webforj/webforj.
• Description highlights server-side UI composition in Java with web components; tone is neutral and concise.

^{Written for commit 0d37a42. Summary will update on new commits.}

[cubic-dev-ai]

All reported issues were addressed across 1 file

<sub>Reply with feedback, questions, or to request a fix.

Re-trigger cubic</sub>