Fix #19 code coverage using c8

Author: boly38

.c8rc.json

@@ -0,0 +1,8 @@
+{
+  "check-coverage": true,
+  "lines": 65,
+  "branches": 65,
+  "functions": 50,
+  "statements": 65,
+  "reporter": ["text-summary", "lcov"]
+}

.gitignore

@@ -4,3 +4,4 @@ logs/
 package-lock.json
 node_modules/
 *.dontpush.*
+coverage/

package.json

@@ -5,6 +5,7 @@
   "main": "src/WebhookServerLauncher.js",
   "type": "module",
   "scripts": {
+    "ci-test": "echo \"ci-test based on .c8rc.json\" && c8 --reporter text --reporter=lcov --lines 66 mocha --unhandled-rejections=strict tests/*.test.js --timeout 50000",
     "test": "mocha --unhandled-rejections=strict tests/*.test.js",
     "testAsync": "set ENABLE_ASYNC_TESTS=true&& mocha --unhandled-rejections=strict tests/*.test.js"
   },
@@ -38,6 +39,7 @@
     "uuid": "^13.0.0"
   },
   "devDependencies": {
+    "c8": "^10.1.3",
     "chai": "^6.2.0",
     "chai-http": "^5.1.2",
     "mocha": "^11.7.4",