Add lockfile-lint

Author: XhmikosR

package-lock.json

@@ -26,7 +26,8 @@
     "build": "inline-source --compress false --root src src/btn.html | html-minifier --config-file html-minifier.json -o docs/github-btn.html",
     "dist": "npm run build",
     "stylelint": "stylelint \"**/*.{css,scss}\" --ignore-path .gitignore",
-    "lint": "npm-run-all --continue-on-error --parallel stylelint xo",
+    "lockfile-lint": "lockfile-lint --allowed-hosts npm --allowed-schemes https: --empty-hostname false --type npm --path package-lock.json",
+    "lint": "npm-run-all --continue-on-error --parallel lockfile-lint stylelint xo",
     "xo": "xo",
     "test": "npm-run-all lint build docs-build",
     "watch": "npm-run-all --parallel watch-*",
@@ -39,8 +40,9 @@
     "chokidar-cli": "^2.1.0",
     "html-minifier": "^4.0.0",
     "inline-source-cli": "^2.0.0",
+    "lockfile-lint": "^4.6.0",
     "npm-run-all": "^4.1.5",
-    "stylelint": "^13.9.0",
+    "stylelint": "13.9.0",
     "stylelint-config-twbs-bootstrap": "^2.1.0",
     "xo": "^0.37.1"
   },