Add NuGet publishing workflow with OIDC authentication and increment package version

.github/workflows/publish-nuget.yml

@@ -0,0 +1,38 @@
+name: Publish NuGet Package
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+
+    permissions:
+      id-token: write
+      contents: read
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+
+      - name: Setup .NET
+        uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: '8.0.x'
+
+      - name: Restore dependencies
+        run: dotnet restore
+
+      - name: Build
+        run: dotnet build --configuration Release --no-restore
+
+      - name: Pack
+        run: dotnet pack --configuration Release --no-build --output ./nupkg
+
+      - name: Publish to NuGet.org
+        run: |
+          dotnet nuget push ./nupkg/*.nupkg \
+            --api-key az \
+            --source https://api.nuget.org/v3/index.json \
+            --skip-duplicate

ContosoMCP/ContosoMCP.csproj

@@ -14,7 +14,7 @@
     <!-- Set recommended package metadata -->
     <PackageReadmeFile>README.md</PackageReadmeFile>
     <PackageId>ContosoMCPServer</PackageId>
-    <PackageVersion>0.1.0-beta</PackageVersion>
+    <PackageVersion>0.2.0-beta</PackageVersion>
     <PackageTags>AI; MCP; server; stdio</PackageTags>
     <Description>An MCP server using the MCP C# SDK.</Description>
   </PropertyGroup>