Add bin and edit workflow

bin/gems/bundler-2.5.9/lib/bundler/templates/newgem/test/minitest/test_helper.rb.tt

@@ -0,0 +1,6 @@
+# frozen_string_literal: true
+
+$LOAD_PATH.unshift File.expand_path("../lib", __dir__)
+require "<%= config[:namespaced_path] %>"
+
+require "minitest/autorun"

bin/gems/bundler-2.5.9/lib/bundler/templates/newgem/test/minitest/test_newgem.rb.tt

@@ -0,0 +1,13 @@
+# frozen_string_literal: true
+
+require "test_helper"
+
+class <%= config[:minitest_constant_name] %> < Minitest::Test
+  def test_that_it_has_a_version_number
+    refute_nil ::<%= config[:constant_name] %>::VERSION
+  end
+
+  def test_it_does_something_useful
+    assert false
+  end
+end