Add templates for exercises batch 7 (#1787)

* Add templates for exercises batch 7

* Change to assert expected, actual pattern

* Fix palindromeproducts test case nesting

Author: meatball133

exercises/practice/meetup/.meta/test_template.erb

@@ -0,0 +1,13 @@
+require 'minitest/autorun'
+require_relative 'meetup'
+
+class MeetupTest < Minitest::Test
+<% json["cases"].each do |cases| %>
+    def test_<%= underscore(cases["description"]) %>
+        <%= skip? %>
+        actual = Meetup.new(<%= cases["input"]["month"] %>, <%= cases["input"]["year"] %>).day(:<%= cases["input"]["dayofweek"].downcase %>, :<%= cases["input"]["week"] %>)
+        expected = Date.parse('<%= cases["expected"] %>')
+        assert_equal expected, actual
+    end
+<% end %>
+end