Add OSGeo4W workflow to compile Addons #8

	---
	name: OSGeo4W

	on:
	push:
	branches:
	- grass8
	pull_request:
	branches:
	- grass8

	jobs:
	build:
	name: ${{ matrix.os }} build and tests

	concurrency:
	group: ${{ github.workflow }}-${{ github.event_name == 'pull_request' && github.head_ref \|\| github.sha }}-${{
	matrix.os }}
	cancel-in-progress: true

	runs-on: ${{ matrix.os }}
	strategy:
	matrix:
	os:
	- windows-2019
	fail-fast: false

	steps:
	- name: Set git to use LF
	run: \|
	git config --global core.autocrlf false
	git config --global core.eol lf
	- uses: actions/checkout@v3
	- uses: msys2/setup-msys2@v2
	with:
	path-type: inherit
	location: D:\
	update: true
	install: git

	- name: Install OSGeo4W
	run: \|
	$exe = 'osgeo4w-setup.exe'
	$url = 'http://download.osgeo.org/osgeo4w/v2/' + $exe
	(New-Object System.Net.WebClient).DownloadFile($url, $exe)
	Start-Process ('.\'+$exe) -ArgumentList '-A -g -k -q \
	-s http://download.osgeo.org/osgeo4w/v2/ -P ${{ env.Deps }}' -Wait
	env:
	Deps: "grass8"

	- name: Compile GRASS GIS Addons
	run: D:\msys64\usr\bin\bash.exe -l (''+(Get-Location)+'\.github\workflows\osgeo4w_build_addons.sh') (Get-Location)

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