docs (saml): add a pkg level readme and a godoc link #266

	name: Go

	on:
	push:
	branches: [main]
	pull_request:
	branches: [main]

	jobs:
	build:
	name: Build
	strategy:
	fail-fast: true
	matrix:
	go: ["1.20", "1.19", "1.18"]
	platform: [ubuntu-latest] # can not run in windows OS
	runs-on: ${{ matrix.platform }}

	steps:
	- name: Set up Go 1.x
	uses: actions/setup-go@4d34df0c2316fe8122ab82dc22947d607c0c91f9 # v4.0.0
	with:
	go-version: ${{ matrix.go }}

	- name: Check out code into the Go module directory
	uses: actions/checkout@8f4b7f84864484a7bf31766abe9204da3cbe65b3 # v3.5.0

	- name: go mod package cache
	uses: actions/cache@88522ab9f39a2ea568f7027eddc7d8d8bc9d59c8 # v3.3.1
	with:
	path: ~/go/pkg/mod
	key: ${{ runner.os }}-go-${{ matrix.go }}-${{ hashFiles('tests/go.mod') }}

	- name: Build
	run: \|
	set -e
	exit_status=
	for f in $(find . -name go.mod)
	do
	pushd $(dirname $f) > /dev/null
	go build ./... \|\| exit_status=$?
	popd > /dev/null
	done
	exit $status

	- name: Test
	run: \|
	set -e
	exit_status=
	for f in $(find . -name go.mod)
	do
	pushd $(dirname $f) > /dev/null
	go test -test.v ./... \|\| exit_status=$?
	popd > /dev/null
	done
	exit $exit_status

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