ci: add markdownlint

Author: rwaffen

.github/workflows/markdownlint.yml

@@ -0,0 +1,23 @@
+---
+# Managed by modulesync - DO NOT EDIT
+# https://voxpupuli.org/docs/updating-files-managed-with-modulesync/
+
+name: Markdown Lint
+
+on:
+  pull_request:
+    branches:
+      - main
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+jobs:
+  markdown-lint:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v6
+      - uses: DavidAnson/markdownlint-cli2-action@v22
+        with:
+          globs: '**/*.md'

.markdownlint-cli2.yaml

@@ -0,0 +1,12 @@
+---
+# Managed by modulesync - DO NOT EDIT
+# https://voxpupuli.org/docs/updating-files-managed-with-modulesync/
+
+ignores:
+  - .github/**
+  - .idea/**
+  - .vendor/**
+  - .vscode/**
+  - CHANGELOG.md
+  - test/**
+  - vendor/**

.markdownlint.yaml

@@ -0,0 +1,14 @@
+---
+# Managed by modulesync - DO NOT EDIT
+# https://voxpupuli.org/docs/updating-files-managed-with-modulesync/
+
+default: true
+
+line-length:
+  line_length: 210
+
+no-inline-html:
+  allowed_elements:
+    - br
+
+descriptive-link-text: false