📦 NEW: link check action (krzjoa#37)

Author: TechWiz-3

.github/workflows/linkcheck.yml

@@ -0,0 +1,13 @@
+on: [push]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Run linksafe
+        uses: TechWiz-3/linksafe@main
+        with:
+          dirs: ".,./addons,./docs,./other"
+          verbose: true
+          whitelist_files: "./docs/index.html"