add release action

.github/workflows/release.yml

@@ -0,0 +1,32 @@
+name: Release
+
+on:
+  release:
+    types:
+      - published
+
+jobs:
+  release_to_pypi:
+    name: Release to PyPI
+    runs-on: ubuntu-latest
+    environment:
+      name: pypi
+      url: https://pypi.org/p/flyweb-framework/
+    permissions:
+      id-token: write
+    steps:
+      - uses: actions/checkout@v4
+      - name: Search and replace version
+        run: |
+          VERSION="${TAG_NAME//v/}"
+          sed -i "s/^version = .*placeholder.*$/version = \"$VERSION\"/" pyproject.toml
+          head pyproject.toml
+        env:
+          TAG_NAME: ${{ github.event.release.tag_name }}
+      - uses: eifinger/setup-rye@v2
+      - name: Pin python-version
+        run: rye pin 3.10
+      - name: Build
+        run: rye build
+      # - name: Publish
+      #   uses: pypa/gh-action-pypi-publish@release/v1.8

pyproject.toml

@@ -1,6 +1,7 @@
 [project]
 name = "flyweb-framework"
-version = "0.3.2"
+# Updated by CI when publishing.
+version = "0.4+placeholder.0"
 description = "Immediate-mode web framework"
 authors = [
     { name = "Girts Folkmanis", email = "[email protected]" }