chore: add release job (#13)

Author: cnblogs-dudu

.github/workflows/release.yml

@@ -0,0 +1,22 @@
+name: Release Package
+
+on:
+  release:
+    types:
+      - published
+
+jobs:
+  release:
+    environment: nuget
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      - uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: '8'
+      - name: pack and push
+        env:
+          nuget_key: ${{ secrets.NUGETAPIKEY }}
+        run: |
+          ./pack.sh ${GITHUB_REF:10}
+          dotnet nuget push ./artifacts/*.* -s https://api.nuget.org/v3/index.json -k $nuget_key --skip-duplicate