add instanbul/nyc test coverage

.gitignore

@@ -45,3 +45,6 @@ working
 .DS_Store
 /.idea/
 /dist/
+
+# nyc coverage output
+.nyc_output/

.nycrc.json

@@ -0,0 +1,5 @@
+{
+  "exclude": [
+    "src/routes/addUnlitedVideo.ts"
+  ]
+}

package.json

@@ -5,6 +5,7 @@
   "main": "src/index.ts",
   "scripts": {
     "test": "npm run tsc && ts-node test/test.ts",
+    "test:coverate": "nyc npm run test",
     "dev": "nodemon",
     "dev:bash": "nodemon -x 'npm test ; npm start'",
     "postgres:docker": "docker run --rm -p 5432:5432 -e POSTGRES_USER=ci_db_user -e POSTGRES_PASSWORD=ci_db_pass postgres:alpine",
@@ -42,6 +43,7 @@
     "eslint": "^8.3.0",
     "mocha": "^9.1.3",
     "nodemon": "^2.0.15",
+    "nyc": "^15.1.0",
     "sinon": "^12.0.1",
     "ts-mock-imports": "^1.3.8",
     "ts-node": "^10.4.0",