Add new workflow for detecting changes in dot org #1

	name: Detect changes in documentation within nginx/nginx.org

	on:
	pull_request:
	# workflow_dispatch:
	# schedule:
	# - cron: "0 /23 * *"

	jobs:
	detect-changes:
	name: Detect changes in 'en' docs of nginx/nginx.org
	runs-on: ubuntu-latest
	outputs:
	IS_CHANGES_DETECTED: ${{ steps.check_changes.outputs.changed }}
	steps:
	- name: Clone the nginx/nginx-org repository
	run: \|
	git clone --depth=2 https://github.com/nginx/nginx.org.git dot-org-repo
	- name: Change for changes in xml/en folder
	id: check_changes
	run: \|
	cd dot-org-repo
	commit1=$(git rev-parse HEAD)
	commit2=$(git rev-parse HEAD^)
	changed=false

	if git diff --name-only $commit2 $commit1 \| grep '^en/'; then
	echo "Changes detected in /en"
	changed=true
	else
	echo "No changes in /en"
	fi
	echo "changed" >> $GITHUB_OUTPUT

	execute-make:
	name: Execute make target 'make hugo-md'
	if: needs.detect-changes.outputs.IS_CHANGES_DETECTED
	needs: detect-changes
	runs-on: ubuntu-latest
	steps:
	- name: PLACEHOLDER
	run: \|
	echo "PLACEHOLDER"

	move-generated-files:
	name: Move generated markdown files to '/content/nginx' directory
	if: needs.detect-changes.outputs.IS_CHANGES_DETECTED
	needs: execute-make
	runs-on: ubuntu-latest
	steps:
	- name: PLACEHOLDER
	run: \|
	echo "PLACEHOLDER"

	create-PR:
	name: Create PR in documentation repository
	if: needs.detect-changes.outputs.IS_CHANGES_DETECTED
	needs: move-generated-files
	runs-on: ubuntu-latest
	steps:
	- name: PLACEHOLDER
	run: \|
	echo "PLACEHOLDER"

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