gnu: Add ruby-sqlite3.

* gnu/packages/ruby.scm (ruby-sqlite3): New variable.

gnu: Add ruby-mime-types.

* gnu/packages/ruby.scm (ruby-mime-types): New variable.

gnu: Add ruby-fivemat.

* gnu/packages/ruby.scm (ruby-fivemat): New variable.

gnu: Add ruby-mime-types-data.

* gnu/packages/ruby.scm (ruby-mime-types-data): New variable.

gnu: Add ruby-minitest-rg.

* gnu/packages/ruby.scm (ruby-minitest-rg): New variable.

gnu: Add ruby-minitest-bonus-assertions.

* gnu/packages/ruby.scm (ruby-minitest-bonus-assertions): New variable.

gnu: Add ruby-minitest-moar.

* gnu/packages/ruby.scm (ruby-minitest-moar): New variable.

gnu: Add ruby-minitest-pretty-diff.

* gnu/packages/ruby.scm (ruby-minitest-pretty-diff): New variable.

gnu: Add ruby-minitest-focus.

* gnu/packages/ruby.scm (ruby-minitest-focus): New variable.

gnu: Add ruby-turn.

* gnu/packages/ruby.scm (ruby-turn): New variable.

gnu: Add ruby-ttfunk.

* gnu/packages/ruby.scm (ruby-ttfunk): New variable.

gnu: Add ruby-ascii85.

* gnu/packages/ruby.scm (ruby-ascii85): New variable.

gnu: Add ruby-afm.

* gnu/packages/ruby.scm (ruby-afm): New variable.

gnu: Add ruby-rc4.

* gnu/packages/ruby.scm (ruby-rc4): New variable.

gnu: Add ruby-hashery.

* gnu/packages/ruby.scm (ruby-hashery): New variable.

gnu: Add ruby-rubytest-cli.

* gnu/packages/ruby.scm (ruby-rubytest-cli): New variable.

gnu: Add ruby-lemon.

* gnu/packages/ruby.scm (ruby-lemon): New variable.

gnu: Add ruby-ae.

* gnu/packages/ruby.scm (ruby-ae): New variable.

gnu: Add ruby-qed.

* gnu/packages/ruby.scm (ruby-qed): New variable.

gnu: Add ruby-brass.

* gnu/packages/ruby.scm (ruby-brass): New variable.