Add libexec stubs

lib/twenty/libexec.rb

@@ -0,0 +1,12 @@
+# frozen_string_literal: true
+
+def spawn(exec, *argv)
+  libexec_dir = File.realpath(File.join(__dir__, "..", "..", "libexec", "twenty"))
+  Process.spawn File.join(libexec_dir, exec), *argv
+end
+
+def wait(pid)
+  Process.wait(pid)
+rescue Interrupt
+  retry
+end

libexec/twenty/connect

@@ -0,0 +1,9 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+##
+# main
+def main(argv)
+  Twenty::Command::Connect.new(argv).run
+end
+main(ARGV)

libexec/twenty/disconnect

@@ -0,0 +1,9 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+##
+# main
+def main(argv)
+  Twenty::Command::Disconnect.new(argv).run
+end
+main(ARGV)

libexec/twenty/down

@@ -0,0 +1,9 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+##
+# main
+def main(argv)
+  Twenty::Command::Down.new(argv).run
+end
+main(ARGV)

libexec/twenty/up

@@ -0,0 +1,9 @@
+#!/usr/bin/env ruby
+# frozen_string_literal: true
+
+##
+# main
+def main(argv)
+  Twenty::Command::Up.new(argv).run
+end
+main(ARGV)