Adding mkdirp and rimraf

Author: TheBlackParade

package-lock.json

@@ -55,7 +55,9 @@
         "@types/yargs": "^13.0.4",
         "chokidar": "^3.3.1",
         "concurrently": "^5.1.0",
+        "mkdirp": "^1.0.4",
         "nodemon": "^2.0.2",
+        "rimraf": "^3.0.2",
         "tsconfig-paths": "^3.9.0",
         "tslint": "^6.1.0"
     }