ci: add publish workflow

.github/workflows/publish.yml

@@ -0,0 +1,38 @@
+---
+name: Publish to PyPI
+
+on:
+  push:
+    tags: ["*"]
+  workflow_dispatch:
+
+jobs:
+  test:
+    uses: ./.github/workflows/test-reusable.yml
+    with:
+      package_name: dvla_vehicle_enquiry_service
+      tests_path: tests
+    secrets: inherit
+
+  publish:
+    needs: test
+    runs-on: ubuntu-latest
+    permissions:
+      id-token: write
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install poetry
+        run: pipx install poetry
+
+      - name: Setup python and restore poetry
+        uses: actions/setup-python@v5
+        with:
+          python-version-file: "pyproject.toml"
+          cache: "poetry"
+
+      - name: Build package
+        run: poetry build
+
+      - name: Publish package to PyPI
+        uses: pypa/gh-action-pypi-publish@release/v1