fix builds and add publishing to maven #457

	# This workflow will build a Java project with Gradle
	# For more information see: https://help.github.com/actions/language-and-framework-guides/building-and-testing-java-with-gradle

	name: Java CI with Gradle

	# Triggers the workflow on push or pull request events (on every branch)
	on: [push, pull_request]

	jobs:
	build:

	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v2
	- name: Set up JDK 17
	uses: actions/setup-java@v1
	with:
	java-version: 17
	- name: Set up node
	uses: actions/setup-node@v2
	with:
	node-version: '16'
	- name: Grant execute permission for gradlew
	run: chmod +x gradlew
	- name: Build with Gradle
	run: ./gradlew build
	- name: Upload artifacts
	uses: actions/upload-artifact@v2
	with:
	name: las2peer
	path: \|
	core/export/jars/las2peer-*.jar
	restmapper/export/jars/las2peer-rest-mapper*.jar
	webconnector/export/jars/las2peer-web-connector*.jar
	bundle/export/jars/las2peer-bundle-*.jar

Provide feedback