build: replace goacc with go test for coverage #235

	name: Build and Test
	on: [push, pull_request]

	env:
	# go needs absolute directories, using the $HOME variable doesn't work here.
	GOCACHE: /home/runner/work/go/pkg/build
	GOPATH: /home/runner/work/go
	GO_VERSION: 1.23.2

	jobs:
	build:
	name: Build
	runs-on: ubuntu-latest
	steps:
	- name: Set up Go
	uses: actions/setup-go@v5
	with:
	go-version: ${{ env.GO_VERSION }}

	- name: Check out source
	uses: actions/checkout@v4

	- name: Build
	run: make build

	test-cover:
	name: Unit coverage
	runs-on: ubuntu-latest
	steps:
	- name: Set up Go
	uses: actions/setup-go@v5
	with:
	go-version: ${{ env.GO_VERSION }}

	- name: Check out source
	uses: actions/checkout@v4

	- name: Test
	run: make unit-cover

	- name: Send coverage
	uses: coverallsapp/github-action@v2
	with:
	files: \|
	coverage.txt
	path-to-profile: btcec/coverage.txt
	btcutil/coverage.txt
	btcutil/psbt/coverage.txt
	format: golang

	test-race:
	name: Unit race
	runs-on: ubuntu-latest
	steps:
	- name: Set up Go
	uses: actions/setup-go@v5
	with:
	go-version: ${{ env.GO_VERSION }}

	- name: Check out source
	uses: actions/checkout@v4

	- name: Test
	run: make unit-race

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