submodule对gitea不管用，所以直接拉了一份拉格兰

Lagrange.Core/.github/workflows/Lagrange.Core-nuget-push.yml

@@ -0,0 +1,39 @@
+name: Lagrange.Core NuGet Push
+
+on:
+  push:
+    branches:
+      - master
+    paths:
+      - "Lagrange.Core/**"
+      - "Lagrange.Core.sln"
+      - "LICENSE"
+      - "README.md"
+  workflow_dispatch:
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Setup .NET Core
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: '8.0.x'
+
+      - name: Pack
+        run: |
+            dotnet build -c Release Lagrange.Core
+            dotnet pack -c Release Lagrange.Core
+            dotnet pack -c Release -p:IncludeSymbols=true -p:SymbolPackageFormat=snupkg Lagrange.Core
+
+      - name: Add private GitHub registry to NuGet
+        run: dotnet nuget add source --username Linwenxuan05 --password ${{ secrets.GITHUB_TOKEN }} --store-password-in-clear-text --name github "https://nuget.pkg.github.com/LagrangeDev/index.json"
+
+      - name: Push generated package to GitHub registry
+        run: dotnet nuget push ./Lagrange.Core/bin/Release/*.nupkg --source "github" --skip-duplicate --api-key ${{ secrets.GIT_TOKEN }}
+
+      - name: Push generated package to NuGet
+        run: dotnet nuget push ./Lagrange.Core/bin/Release/*.nupkg --source https://api.nuget.org/v3/index.json --skip-duplicate --api-key ${{ secrets.NUGETAPIKEY }}