Add bin and edit workflow

bin/gems/ffi-1.17.4-x86_64-linux-gnu/samples/hello_ractor.rb

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+# See the ffi wiki for how to use FFI with Ractors:
+# https://github.com/ffi/ffi/wiki/Ractors
+
+require 'ffi'
+
+class Ractor
+  # compat with Ruby-3.4 and older
+  alias value take unless method_defined? :value
+end
+
+module Foo
+  extend FFI::Library
+  ffi_lib FFI::Library::LIBC
+  attach_function("cputs", "puts", [ :string ], :int)
+  freeze
+end
+Ractor.new do
+  Foo.cputs("Hello, World via libc puts using FFI in a Ractor")
+end.value