Add Helm chart as an artifact to releases

Fixes #17.

.github/workflows/release.yaml

@@ -37,6 +37,10 @@ jobs:
         with:
           go-version: "~1.20"
 
+      - name: Get Version
+        run: echo "::set-output name=version::$(./scripts/version.sh)"
+        id: version
+
       - name: Build
         run: ./scripts/build.sh
 
@@ -78,3 +82,22 @@ jobs:
           helm repo index build/helm --url https://helm.coder.com/logstream-kube --merge build/helm/index.yaml
           gsutil -h "Cache-Control:no-cache,max-age=0" cp build/helm/${version}.tgz gs://helm.coder.com/logstream-kube
           gsutil -h "Cache-Control:no-cache,max-age=0" cp build/helm/index.yaml gs://helm.coder.com/logstream-kube
+
+      - name: Create Release
+        uses: actions/create-release@v1
+        id: create_release
+        with:
+          draft: false
+          prerelease: false
+          release_name: ${{ steps.version.outputs.version }}
+          tag_name: ${{ github.ref }}
+
+      - name: Upload Helm Release Asset
+        uses: actions/upload-release-asset@v1
+        env:
+          GITHUB_TOKEN: ${{ github.token }}
+        with:
+          upload_url: ${{ steps.create_release.outputs.upload_url }}
+          asset_path: build/${{ steps.version.outputs.version }}.tgz
+          asset_name: helm.tar.gz
+          asset_content_type: application/gzip