unite multiple go.mod files #25

	name: CI for Go tools

	on:
	push:
	branches:
	- main
	paths:
	- 'tool/**'
	pull_request:
	paths:
	- 'tool/**'

	jobs:
	ci-articlegen:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- name: Set up Go
	uses: actions/setup-go@v4
	with:
	go-version-file: 'tool/go.mod'
	cache-dependency-path: 'tool/go.sum'
	- name: Build
	run: go build -v -C ./tool/articlegen
	ci-makepr:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- name: Set up Go
	uses: actions/setup-go@v4
	with:
	go-version-file: 'tool/go.mod'
	cache-dependency-path: 'tool/go.sum'
	- name: Build
	run: go build -v -C ./tool/makepr
	ci-sincelastcommit:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@v3
	- name: Set up Go
	uses: actions/setup-go@v4
	with:
	go-version-file: 'tool/go.mod'
	cache-dependency-path: 'tool/go.sum'
	- name: Build
	run: go build -v -C ./tool/makepr

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