Add GitHub action to build, test, and upload coverage #1

	# https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-go

	name: Go

	on:
	push:
	branches: [ "master" ]
	pull_request:
	branches: [ "master" ]

	jobs:

	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3

	- name: Set up Go
	uses: actions/setup-go@v4
	with:
	go-version: '1.20'

	- name: Build
	run: go build -v ./...

	- name: Test
	run: sh ./test.sh

	- name: Upload coverage data
	run: bash <(curl -s https://codecov.io/bash)

Provide feedback