feat: supports add submod by ModSpec #1399

	# Reference from:
	# https://github.com/c-bata/go-prompt/blob/master/.github/workflows/test.yml
	name: Test
	on:
	pull_request:
	branches:
	- main
	push:
	branches:
	- main

	jobs:
	Test:
	name: Unit tests with coverage
	runs-on: ubuntu-latest
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	with:
	fetch-depth: 0
	- name: Set up Go
	uses: actions/setup-go@v5
	with:
	go-version: 1.23

	- run: go build ./...
	- run: go vet ./...
	- name: Running go tests with coverage
	env:
	GO111MODULE: on
	run: \|
	make cover
	- name: Send coverage
	uses: shogo82148/actions-goveralls@v1
	with:
	path-to-profile: coverage.out

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