Create release when tag is pushed

.github/workflows/release.yaml

@@ -0,0 +1,39 @@
+# https://docs.github.com/en/actions
+
+on:
+  push:
+    tags:
+      - "**"
+
+name: Release
+
+jobs:
+  release:
+    name: Release
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Install PHP with extensions
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: 8.3
+          coverage: none
+          extensions: none
+          tools: none
+
+      - name: Determine tag
+        run: echo "RELEASE_TAG=${GITHUB_REF#refs/tags/}" >> $GITHUB_ENV
+
+      - name: Parse ChangeLog
+        run: build/scripts/extract-release-notes.php ${{ env.RELEASE_TAG }} > release-notes.md
+
+      - name: Create release
+        uses: ncipollo/release-action@v1
+        with:
+          bodyFile: release-notes.md
+          tag: ${{ env.RELEASE_TAG }}
+          token: ${{ secrets.GITHUB_TOKEN }}

build/scripts/extract-release-notes.php

@@ -0,0 +1,46 @@
+#!/usr/bin/env php
+<?php declare(strict_types=1);
+if ($argc !== 2) {
+    print $argv[0] . ' <tag>' . PHP_EOL;
+
+    exit(1);
+}
+
+$version = $argv[1];
+
+$file = __DIR__ . '/../../ChangeLog.md';
+
+if (!is_file($file) || !is_readable($file)) {
+    print $file . ' cannot be read' . PHP_EOL;
+
+    exit(1);
+}
+
+$buffer = '';
+$append = false;
+
+foreach (file($file) as $line) {
+    if (str_starts_with($line, '## [' . $version . ']')) {
+        $append = true;
+
+        continue;
+    }
+
+    if ($append && (str_starts_with($line, '## ') || str_starts_with($line, '['))) {
+        break;
+    }
+
+    if ($append) {
+        $buffer .= $line;
+    }
+}
+
+$buffer = trim($buffer);
+
+if ($buffer === '') {
+    print 'Unable to extract release notes' . PHP_EOL;
+
+    exit(1);
+}
+
+print $buffer . PHP_EOL;