Add NuGet CI workflow

.gitea/workflows/nuget.yml

@@ -0,0 +1,37 @@
+name: Publish NuGet Packages
+
+on:
+  push:
+    branches: [main]
+    tags:
+      - "v*"
+
+env:
+  GITEA_TOKEN: ${{ secrets.GITEA_TOKEN }}
+  GITEA_URL: https://gitea.shtao1.cn
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+      
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: "10.0.x"
+      
+      - name: Pack Domain
+        if: startsWith(github.ref, "refs/tags/v")
+        run: dotnet pack fengling-platform/Fengling.Platform.Domain/Fengling.Platform.Domain.csproj -c Release -o ./packages
+      
+      - name: Pack Infrastructure
+        if: startsWith(github.ref, "refs/tags/v")
+        run: dotnet pack fengling-platform/Fengling.Platform.Infrastructure/Fengling.Platform.Infrastructure.csproj -c Release -o ./packages
+      
+      - name: Push to Gitea
+        if: startsWith(github.ref, "refs/tags/v")
+        run: |
+          for pkg in ./packages/*.nupkg; do
+            dotnet nuget push "$pkg" --source "$GITEA_URL/gitea_registry/movingsam/go/__index" --skip-duplicate
+          done