npm: use separate scripts for different test reporters

Author: JCPedroza

package.json

@@ -7,8 +7,9 @@
   },
   "description": "Algorithms and data structures implemented in JavaScript",
   "scripts": {
-    "test":  "concurrently \"npm run lint-test\" \"npm run unit-test\"",
-    "unit-test": "node --test --test-reporter dot",
+    "test":  "concurrently \"npm run lint-test\" \"npm run unit-test-dot\"",
+    "unit-test-spec": "node --test --test-reporter spec",
+    "unit-test-dot": "node --test --test-reporter dot",
     "lint-test": "standard .",
     "build-jsdoc": "./node_modules/.bin/jsdoc --readme ./README.md --configure ./jsdoc.json --destination ./docs --recurse .",
     "prepare": "husky install"