lang/ruby34: Add new port

Add lang/ruby34, new 3.4 series of Ruby language.

ReleaseNotes: https://www.ruby-lang.org/en/news/2024/12/25/ruby-3-4-0-released/
ReleaseNotes: https://www.ruby-lang.org/en/news/2024/12/25/ruby-3-4-1-released/
ReleaseNotes: https://www.ruby-lang.org/en/news/2025/02/14/ruby-3-4-2-released/
ReleaseNotes: https://www.ruby-lang.org/en/news/2025/04/14/ruby-3-4-3-released/