Add awesomebot link checker (#486)

Add a github action to check the links in README.md

Signed-off-by: Joe Block <jpb@unixorn.net>

.github/workflows/awesomebot.yml

@@ -0,0 +1,23 @@
+---
+name: Check links in README
+
+on:
+  push:
+    branches: [ '*' ]
+  pull_request:
+    branches: [ '*' ]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        # Full git history is needed to get a proper list of changed files
+        # within `mega-linter`
+        fetch-depth: 0
+    - uses: docker://dkhamsing/awesome_bot:latest
+      with:
+        args: /github/workspace/README.md --allow-ssl --allow 202,500,501,502,503,504,509,521 --allow-dupe --allow-redirect --request-delay 1