Add release workflow

.github/workflows/release.yaml

@@ -0,0 +1,38 @@
+---
+name: Release
+
+# yamllint disable-line rule:truthy
+on:
+  release:
+    types:
+      - published
+
+jobs:
+  release:
+    name: Releasing to PyPi
+    runs-on: ubuntu-latest
+    environment:
+      name: release
+      url: https://pypi.org/project/webrtc-models/
+    permissions:
+      contents: write
+      id-token: write
+    steps:
+      - name: ⤵️ Check out code from GitHub
+        uses: actions/[email protected]
+      - name: 🏗 Set up uv
+        uses: astral-sh/setup-uv@v3
+        with:
+          enable-cache: true
+      - name: 🏗 Set package version
+        run: |
+          sed -i "s/^version = \".*\"/version = \"${{ github.event.release.tag_name }}\"/" pyproject.toml
+      - name: 🏗 Build package
+        run: uv build
+      - name: 🚀 Publish to PyPi
+        run: uv publish
+      - name: ✍️ Sign published artifacts
+        uses: sigstore/[email protected]
+        with:
+          inputs: ./dist/*.tar.gz ./dist/*.whl
+          release-signing-artifacts: true