Add go.mod per font #59

	name: Go

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

	jobs:

	build:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v4

	- name: Set up Go
	uses: actions/setup-go@v5
	with:
	go-version: 1.21

	- name: check gofmt errors
	run: diff -u <(echo -n) <(gofmt -d -s .) \|\| (echo "Please check go formatting!" && exit 1)

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

	- name: Run go vet
	run: go vet ./...

	- name: Test
	run: go test -v ./...

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