🎨 Add message grouping (#483)

* 🎨 add message grouping

* ⚗️ try output

* 🔥 remove unnecessary code

* ⬆️ bump deps

* 🎨 build project

* ⬆️ bump deps

* 🎨 formatting code

* ⬇️ revert bumps

* 🎨 using logger service

* 🎨 using package lock version 1

* 🎨 add engines keyword

* ♻️ create processIssue method

* ✨ add grouping method

* 🎨 build project

* 🎨 update engine declaration

* 💚 fix merge conflicts

package.json

@@ -30,6 +30,10 @@
     "node",
     "stale"
   ],
+  "engines": {
+    "node": "12",
+    "npm": "6"
+  },
   "author": "GitHub",
   "license": "MIT",
   "dependencies": {