Add Github release workflow (#104)

.github/workflows/gh-release.yml

@@ -0,0 +1,39 @@
+# Copyright 2024 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+name: Create Github release
+
+on:
+  push:
+    tags:
+      - '@google/generative-ai@*'
+
+permissions:
+  contents: write
+
+jobs:
+  release:
+    name: Release pushed tag
+    runs-on: ubuntu-latest
+    steps:
+      - name: Create Github release
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+          tag: ${{ github.ref_name }}
+        run: |
+          gh release create "$tag" \
+              --repo="$GITHUB_REPOSITORY" \
+              --title="$tag" \
+              --generate-notes
+              --verify-tag