add _pkgdown.yml and .github/workflows/pkgdown.yml GHA #2

	# Workflow derived from https://github.com/r-lib/actions/tree/v2/examples
	# Need help debugging build failures? Start at https://github.com/r-lib/actions#where-to-find-help
	on:
	push:
	paths:
	- '**.yml'
	branches:
	- pkgdown
	release:
	types: [published]
	workflow_dispatch:

	name: pkgdown

	jobs:
	pkgdown:
	runs-on: ubuntu-latest
	env:
	GITHUB_PAT: ${{ secrets.GITHUB_TOKEN }}
	steps:
	- uses: actions/checkout@v3
	with:
	ref: devel

	- name: Copy .github and _pkgdown.yml
	run: \|
	git config --global --add safe.directory /__w/${{ github.event.repository.name }}/${{ github.event.repository.name }}
	git fetch origin pkgdown
	git checkout origin/pkgdown -- .github
	git checkout origin/pkgdown -- _pkgdown.yml

	- uses: r-lib/actions/setup-pandoc@v2

	- uses: r-lib/actions/setup-r@v2
	with:
	use-public-rspm: true

	- uses: r-lib/actions/setup-r-dependencies@v2
	with:
	extra-packages: any::pkgdown, local::.
	needs: website

	- name: Build site
	run: pkgdown::build_site_github_pages(new_process = FALSE, install = FALSE)
	shell: Rscript {0}

	- name: Upload pkgdown artifact
	uses: actions/upload-pages-artifact@v3
	with:
	path: docs

	deploy:
	needs: pkgdown
	permissions:
	contents: write
	pages: write
	id-token: write
	runs-on: ubuntu-latest

	steps:
	- name: Deploy to GitHub Pages
	id: deployment
	uses: actions/deploy-pages@v4

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