Add documentation and licensing #1

	on: [ push, pull_request ]
	name: Go Checks

	jobs:
	unit:
	runs-on: ubuntu-latest
	name: All
	steps:
	- uses: actions/checkout@v3
	with:
	submodules: recursive
	- uses: actions/setup-go@v4
	with:
	go-version: 1.20.x
	- name: Install staticcheck
	run: go install honnef.co/go/tools/cmd/staticcheck@4970552d932f48b71485287748246cf3237cebdf # 2023.1 (v0.4.0)
	- name: Check that go.mod is tidy
	run: \|
	go mod tidy
	if [[ -n $(git ls-files --other --exclude-standard --directory -- go.sum) ]]; then
	echo "go.sum was added by go mod tidy"
	exit 1
	fi
	git diff --exit-code -- go.sum go.mod
	- name: gofmt
	if: success() \|\| failure()
	run: \|
	out=$(gofmt -s -l .)
	if [[ -n "$out" ]]; then
	echo $out \| awk '{print "::error file=" $0 ",line=0,col=0::File is not gofmt-ed."}'
	exit 1
	fi
	- name: go vet
	if: success() \|\| failure()
	run: go vet ./...
	- name: staticcheck
	if: success() \|\| failure()
	run: \|
	set -o pipefail
	staticcheck ./... \| sed -e 's@$.*$\.go@./\1.go@g'
	- name: go generate
	if: (success() \|\| failure())
	run: \|
	git clean -fd # make sure there aren't untracked files / directories
	go generate -x ./...
	# check if go generate modified or added any files
	if ! $(git add . && git diff-index HEAD --exit-code --quiet); then
	echo "go generated caused changes to the repository:"
	git status --short
	exit 1
	fi

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