added typescript decorator section in typescript.json

Author: SojebSikder

data/typescript.json

@@ -260,6 +260,18 @@
                 }
             ]
         },
+        {
+            "title": "ডেকোরেটর",
+            "items": [{
+                    "definition": "ডিক্লারেশন",
+                    "code": "function food(value: string)\n{ \n return function (target: any, propertyKey: string, descriptor: PropertyDescriptor) {};}"
+                },
+                {
+                    "definition": "ডেকোরেটর ব্যাবহার করা",
+                    "code": "@food('burger')\n class kitchen {} "
+                }
+            ]
+        },
         {
             "title": "ইউটিলিটি টাইপ",
             "items": [{