[gherkin mode]: Add support for Rule Example keywords

Co-authored-by: Noor-Masarwe <[email protected]>

Author: Noormasarwa

mode/gherkin/gherkin.js

@@ -155,6 +155,22 @@ CodeMirror.defineMode("gherkin", function () {
         state.inKeywordLine = true;
         return "keyword";
 
+        // RULE
+      } else if (state.allowScenario && stream.match(/(規則|ルール|قانون|قواعد|חוק|قاعدة|Правило|Правила|Reegel|Regel|Règle|Regola|Regla|Regulă|Regul|Regula|Regel|Regel|Regula|Правило|Правила|Regel|Regola|Regul|Reeglid|Rule):/)) {
+        state.allowPlaceholders = false;
+        state.allowSteps = true;
+        state.allowBackground = false;
+        state.allowMultilineArgument = true;
+        return "keyword";
+
+        // EXAMPLE
+      } else if (state.allowScenario && stream.match(/(例子|例|サンプル|예|דוגמה|مثال|Үрнәк|Пример|Παράδειγμα|Exemplo|Exemple|Beispiel|Ejemplo|Example|Esempio|Örnek|Példa|Pavyzdys|Paraugs|Voorbeeld|Příklad|Príklad|Exemplu|Esempi):/)) {
+        state.allowPlaceholders = false;
+        state.allowSteps = true;
+        state.allowBackground = false;
+        state.allowMultilineArgument = true;
+        return "keyword";
+
       // INLINE STRING
       } else if (stream.match(/"[^"]*"?/)) {
         return "string";