feat(gha): unify GHA - renovate, megalinter, markdown, ... #16

	---
	name: MegaLinter

	on:
	workflow_dispatch:
	push:
	branches-ignore:
	- main

	permissions: read-all

	jobs:
	build:
	name: MegaLinter
	runs-on: ubuntu-latest
	permissions:
	contents: write
	statuses: write
	steps:
	- name: Checkout Code
	uses: actions/checkout@b4ffde65f46336ab88eb53be808477a3936bae11 # v4.1.1

	- name: Restore lychee cache
	uses: actions/cache@e12d46a63a90f2fae62d114769bbf2a179198b5c # v3.3.3
	with:
	path: .lycheecache
	key: cache-lychee-${{ github.sha }}
	restore-keys: cache-lychee-

	- name: Extract commands from markdown files
	run: \|
	set -euxo pipefail
	echo '#!/usr/bin/env bash' > README.sh
	find . -name '*.md' -print0 \| while IFS= read -r -d '' FILE ; do
	# Extract: ```bash ... ```
	sed -n "/^\`\`\`$bash\\|shell$$/,/^\`\`\`$/p" "${FILE}" \| sed '/^```*/d' >> README.sh
	# Extract: ```bash ... ```
	sed -n "/^ \`\`\`$bash\\|shell$$/,/^ \`\`\`$/p" "${FILE}" \| sed '/^ ```*/d; s/^ //' >> README.sh
	done
	chmod a+x README.sh

	- name: 💡 MegaLinter
	uses: oxsecurity/megalinter@7e042c726c68415475b05a65a686c612120a1232 # v7.7.0
	env:
	GITHUB_COMMENT_REPORTER: false
	GITHUB_STATUS_REPORTER: true
	GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

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