feat: add Node.js coverage script using c8 (closes #7289) (#7294)

Co-authored-by: Jay <jasonsaayman@gmail.com>

package.json

@@ -46,6 +46,7 @@
   "scripts": {
     "test": "npm run test:node && npm run test:browser && npm run test:package",
     "test:node": "npm run test:mocha",
+    "test:node:coverage": "c8 npm run test:mocha",
     "test:browser": "npm run test:karma",
     "test:package": "npm run test:eslint && npm run test:dtslint && npm run test:exports",
     "test:eslint": "node bin/ssl_hotfix.js eslint lib/**/*.js",
@@ -112,6 +113,7 @@
     "abortcontroller-polyfill": "^1.7.5",
     "auto-changelog": "^2.4.0",
     "body-parser": "^1.20.2",
+    "c8": "^10.1.3",
     "chalk": "^5.3.0",
     "coveralls": "^3.1.1",
     "cross-env": "^7.0.3",
@@ -239,5 +241,22 @@
     "extends": [
       "@commitlint/config-conventional"
     ]
+  },
+  "c8": {
+    "all": true,
+    "include": [
+      "lib/**/*.js",
+      "lib/**/*.ts"
+    ],
+    "exclude": [
+      "test",
+      "sandbox"
+    ],
+    "reporter": [
+      "text",
+      "lcov",
+      "html"
+    ],
+    "report-dir": "./coverage"
   }
 }