move main/ruby-* to unmaintained

unmaintained/ruby-actionpack-action_caching4.2/APKBUILD

unmaintained/ruby-arel/APKBUILD

unmaintained/ruby-builder/APKBUILD

unmaintained/ruby-bundler/APKBUILD

unmaintained/ruby-erubis/APKBUILD

unmaintained/ruby-fastercsv/APKBUILD

unmaintained/ruby-fcgi/APKBUILD

unmaintained/ruby-globalid/APKBUILD

unmaintained/ruby-hike/APKBUILD

unmaintained/ruby-i18n/APKBUILD

unmaintained/ruby-kgio/APKBUILD

unmaintained/ruby-mail/APKBUILD

unmaintained/ruby-metaclass/APKBUILD

unmaintained/ruby-mime-types/APKBUILD

unmaintained/ruby-mini_portile/APKBUILD

unmaintained/ruby-mocha/APKBUILD

unmaintained/ruby-multi_json/APKBUILD

unmaintained/ruby-openid/APKBUILD

unmaintained/ruby-pg/APKBUILD

unmaintained/ruby-polyglot/APKBUILD