isogram: add generator template

Author: ErikSchierboom

exercises/practice/isogram/.meta/generator.tpl

@@ -0,0 +1,10 @@
+(ns isogram-test
+  (:require [clojure.test :refer [deftest testing is]]
+            isogram))
+
+{{#test_cases.isIsogram~}}
+(deftest isogram?_test_{{idx}}
+  (testing "{{description}}"    
+    (is ({{#expected~}}true?{{else}}false?{{/expected}}) (isogram/isogram? "{{input.phrase}}")))))
+    {{/expected}}
+{{/test_cases.isIsogram}}