ci: add automatic releases

.github/workflows/release.yml

@@ -0,0 +1,49 @@
+name: Release
+on:
+  push:
+    tags:
+      - v*
+jobs:
+  version:
+    name: Prepare version string
+    runs-on: ubuntu-latest
+    outputs:
+      version: ${{ steps.version.outputs.version }}
+    steps:
+      - name: Output version string
+        id: version
+        env:
+          TAG: ${{ github.ref_name }}
+        run: echo "version=${TAG#v}" >> "$GITHUB_OUTPUT"
+  package:
+    needs: version
+    name: Package
+    uses: ./.github/workflows/package.yml
+    with:
+      version: ${{ needs.version.outputs.version }}
+  release:
+    needs: [version, package]
+    name: Release
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - name: Checkout sources
+        uses: actions/checkout@v4
+      - name: Create release
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          TAG: ${{ github.ref_name }}
+        run: gh release create "$TAG" -t "Release ${TAG#v}" --notes-from-tag
+      - name: Download artifacts
+        uses: actions/download-artifact@v4
+        with:
+          pattern: package.*
+          path: packages
+          merge-multiple: true
+      - name: Upload assets
+        env:
+          GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          TAG: ${{ github.ref_name }}
+          VERSION: ${{ needs.version.outputs.version }}
+        run: gh release upload "$TAG" packages/*