Adds CI. #17

	name: Map Generation CI

	on:
	push:
	pull_request:
	workflow_dispatch:

	jobs:
	Map:
	name: Verify Map Generation
	runs-on: ubuntu-latest
	container:
	image: ubuntu:20.04
	steps:
	- name: Install prereqs
	run: \|
	apt-get update
	apt-get install -y git python3-pip python3-empy
	- name: Clone repo this repo
	run: \|
	git clone https://github.com/maliput/maliput_xodr.git
	- name: Checkout branch
	run: \|
	git fetch origin pull/${{ github.event.number }}/head:pr
	git checkout pr
	- name: Install requirements
	run: \|
	pip3 install -r requirements.txt
	- name: Generate maps
	run: \|
	bash tools/update_resources.sh
	- name: Output git status
	run: \|
	git status
	- name: Verify there is no changes
	run: \|
	ret=git status --porcelain \| wc -l
	if [ $ret -ne 0 ]; then
	echo "There are changes in the generated files. Please run tools/update_resources.sh and commit the changes."
	exit 1
	fi

Provide feedback