ci(release): add GoReleaser and release-please for semantic versioning

Set up automated releases using release-please to create version PRs
from conventional commits, and GoReleaser to publish GitHub releases.

Author: dndungu

.github/workflows/release-please.yml

@@ -0,0 +1,44 @@
+name: Release
+
+on:
+  push:
+    branches:
+      - main
+
+permissions:
+  contents: write
+  pull-requests: write
+
+jobs:
+  release-please:
+    runs-on: ubuntu-latest
+    outputs:
+      release_created: ${{ steps.release.outputs.release_created }}
+      tag_name: ${{ steps.release.outputs.tag_name }}
+    steps:
+      - uses: googleapis/release-please-action@v4
+        id: release
+        with:
+          release-type: go
+
+  goreleaser:
+    needs: release-please
+    if: ${{ needs.release-please.outputs.release_created }}
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - uses: actions/setup-go@v5
+        with:
+          go-version-file: go.mod
+
+      - uses: goreleaser/goreleaser-action@v6
+        with:
+          version: "~> v2"
+          args: release --clean
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.goreleaser.yml

@@ -0,0 +1,35 @@
+# GoReleaser config for a Go library (no binary builds).
+version: 2
+
+builds:
+  - skip: true
+
+changelog:
+  sort: asc
+  filters:
+    exclude:
+      - "^docs:"
+      - "^test:"
+      - "^chore\\(deps\\):"
+  groups:
+    - title: "Breaking Changes"
+      regexp: '^.*?!:.+$'
+      order: 0
+    - title: "Features"
+      regexp: '^feat.*'
+      order: 1
+    - title: "Bug Fixes"
+      regexp: '^fix.*'
+      order: 2
+    - title: "Performance"
+      regexp: '^perf.*'
+      order: 3
+    - title: "Other"
+      order: 999
+
+release:
+  github:
+    owner: zerfoo
+    name: float16
+  prerelease: auto
+  make_latest: true

.release-please-manifest.json

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

release-please-config.json

@@ -0,0 +1,19 @@
+{
+  "packages": {
+    ".": {
+      "release-type": "go",
+      "bump-minor-pre-major": true,
+      "bump-patch-for-minor-pre-major": true,
+      "changelog-sections": [
+        { "type": "feat", "section": "Features" },
+        { "type": "fix", "section": "Bug Fixes" },
+        { "type": "perf", "section": "Performance" },
+        { "type": "refactor", "section": "Refactoring" },
+        { "type": "docs", "section": "Documentation", "hidden": true },
+        { "type": "test", "section": "Tests", "hidden": true },
+        { "type": "chore", "section": "Miscellaneous", "hidden": true }
+      ]
+    }
+  },
+  "$schema": "https://raw.githubusercontent.com/googleapis/release-please/main/schemas/config.json"
+}