build(): Refactor Gulpfile to TS

package.json

@@ -84,6 +84,7 @@
     "@types/cors": "2.8.5",
     "@types/express": "4.17.0",
     "@types/fastify-cors": "2.1.0",
+    "@types/gulp": "^4.0.6",
     "@types/kafka-node": "2.0.8",
     "@types/mocha": "5.2.7",
     "@types/node": "10.14.13",
@@ -121,7 +122,6 @@
     "nodemon": "1.19.1",
     "nyc": "14.1.1",
     "prettier": "1.18.2",
-    "promise.series": "0.2.0",
     "sinon": "7.3.2",
     "sinon-chai": "3.3.0",
     "socket.io-client": "2.2.0",