ci: add release workflow

.github/workflows/release.yml

@@ -0,0 +1,52 @@
+# yamllint disable-line rule:document-start
+name: release
+
+# yamllint disable-line rule:truthy
+on:
+  push:
+    tags:
+      - "*.*.*"
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Setup PHP 8.1
+        uses: shivammathur/setup-php@v2
+        with:
+          php-version: 8.1
+        env:
+          COMPOSER_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Build release
+        run: composer run-script release:build
+
+      - uses: actions/upload-artifact@v4
+        with:
+          name: gf-sagepay
+          path: release/*.zip
+
+  lint-wp-org:
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          name: gf-sagepay
+      - run: unzip gf-sagepay.zip -d /tmp/plugin-source-code
+      - run: find /tmp/plugin-source-code -name "*.php" -print0 | xargs -n 1 -0 php -l
+
+  publish-to-github-releases:
+    runs-on: ubuntu-latest
+    needs: lint-wp-org
+    steps:
+      - uses: actions/checkout@v3
+      - uses: actions/download-artifact@v4
+        with:
+          name: gf-sagepay
+      - name: Create release
+        run: gh release create "${GITHUB_REF/refs\/tags\//}" gf-sagepay.zip --generate-notes
+        env:
+          GH_TOKEN: ${{ github.token }}