chore(ci,docs): add a github action to check links in .md, .py (#1375)

* chore(ci): add an action to check links in .md, .py

* chore(ci): update cron time

* chore(ci): reduce concurrency to avoid chances of getting throttled

Author: danceratopz

.github/workflows/check-links.yml

@@ -0,0 +1,33 @@
+name: Links
+
+on:
+  repository_dispatch:
+  workflow_dispatch:
+  schedule:
+    - cron: "00 12 * * *"
+
+jobs:
+  linkChecker:
+    runs-on: ubuntu-latest
+    permissions:
+      issues: write # required for peter-evans/create-issue-from-file
+    steps:
+      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683
+
+      - name: Link Checker
+        id: lychee
+        uses: lycheeverse/lychee-action@1d97d84f0bc547f7b25f4c2170d87d810dc2fb2c
+        # We use --exclude '\.md(#.*)?$' to skip internal links in markdown like [See test](../tests/.../test_case.md)
+        # otherwise we get false positives due to links pointing to content that gets generated during our mkdocs flow.
+        # These links are checked during `mkdocs build --strict`
+        args: lychee README.md src/**/*.py src/**/*.md tests/**/*.py tests/**/*.md docs/**/*.md --exclude '\.md(#.*)?$'
+        with:
+          fail: false
+
+      - name: Create Issue From File
+        if: steps.lychee.outputs.exit_code != 0
+        uses: peter-evans/create-issue-from-file@e8ef132d6df98ed982188e460ebb3b5d4ef3a9cd
+        with:
+          title: Link Checker Report
+          content-filepath: ./lychee/out.md
+          labels: report, automated issue

.lycheeignore

@@ -0,0 +1,7 @@
+http://localhost/
+http://127.0.0.1:3000/
+https://github/
+ttps://github.com/%7Bself.RepositoryOwner%7D/
+https://api.github.com/repos/%7Bself.RepositoryOwner%7D/
+https://api.github.com/repos/%7Brepo%7D/releases
+https://github.com/ethereum/execution-spec-tests/releases/download/