ci(release): setup CI workflows and release please (#1)

.github/.release-please-manifest.json

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+{
+  ".": "0.0.0"
+}

.github/release-please-config.json

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+{
+  "initial-version": "0.0.1",
+  "packages": {
+    ".": {
+      "release-type": "go",
+      "changelog-path": "CHANGELOG.md",
+      "bump-minor-pre-major": true,
+      "bump-patch-for-minor-pre-major": true,
+      "draft": false,
+      "prerelease": false
+    }
+  },
+  "$schema": "https://raw.githubusercontent.com/googleapis/release-please/main/schemas/config.json"
+}

.github/workflows/ci.yml

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+---
+name: CI
+on: [push]
+
+jobs:
+  build:
+    name: build
+    runs-on: macos-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-go@v5
+        with:
+          go-version: "1.21"
+      - name: Build binary
+        run: make
+      - name: Print version
+        run: |
+          ./bin/macos-battery-exporter -v
+
+  release-please:
+    runs-on: ubuntu-latest
+    if: github.ref == 'refs/heads/main'
+    outputs:
+      release_created: ${{ steps.release-please.outputs.release_created }}
+      version: ${{ steps.release-please.outputs.version }}
+    steps:
+      - uses: jimeh/release-please-manifest-action@v1
+        id: release-please
+
+  release:
+    runs-on: ubuntu-latest
+    needs: [build, release-please]
+    if: needs.release-please.outputs.release_created
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - uses: actions/setup-go@v4
+        with:
+          go-version: "1.21"
+      - name: Run GoReleaser
+        uses: goreleaser/goreleaser-action@v5
+        with:
+          args: release --clean
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          BREW_TAP_TOKEN: ${{ secrets.BREW_TAP_TOKEN }}

.goreleaser.yml

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+before:
+  hooks:
+    - go mod tidy
+builds:
+  - env:
+      - CGO_ENABLED=0
+    mod_timestamp: "{{ .CommitTimestamp }}"
+    flags:
+      - -trimpath
+    ldflags:
+      - "-s -w -X main.version={{ .Version }} -X main.commit={{ .Commit }}"
+    goos:
+      - "darwin"
+    goarch:
+      - "amd64"
+      - "arm64"
+
+universal_binaries:
+  - replace: true
+
+archives:
+  - format: tar.gz
+    name_template: |-
+      {{ .ProjectName }}-{{ .Version }}_{{ .Os }}_{{ if eq .Arch "all" }}universal{{ else }}{{ .Arch }}{{ end }}{{ if .Arm }}v{{ .Arm }}{{ end }}{{ if not (eq .Amd64 "v1") }}{{ .Amd64 }}{{ end }}
+    wrap_in_directory: true
+
+checksum:
+  name_template: "checksums.txt"
+snapshot:
+  name_template: "{{ .Tag }}-next"
+
+changelog:
+  skip: true
+
+brews:
+  - name: macos-battery-exporter
+    homepage: "https://github.com/jimeh/macos-battery-exporter"
+    description: "Prometheus exporter for detailed battery metrics on macOS."
+    license: "MIT"
+    skip_upload: auto
+    service: |
+      run [bin/"macos-battery-exporter"]
+    test: |
+      system "#{bin}/macos-battery-exporter -v"
+    repository:
+      owner: jimeh
+      name: homebrew-macos-battery-exporter
+      branch: main
+      token: "{{ .Env.BREW_TAP_TOKEN }}"