Add release workflow

.github/workflows/release.yml

@@ -0,0 +1,20 @@
+name: Release
+
+on: push
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+      - name: Build
+        run: build.sh
+#      - name: Test
+#        run: cat Release.txt
+      - name: Release
+        uses: softprops/action-gh-release@v2
+        if: startsWith(github.ref, 'refs/tags/')
+        with:
+          files: |
+            build/phpup