Merge branch 'add-gitHub-action-to-release-nuget-package' of https://github.com/notion-dotnet/notion-sdk-net into add-gitHub-action-to-release-nuget-package

Author: KoditkarVedant

.github/workflows/release.yml

@@ -0,0 +1,39 @@
+name: Release to NuGet
+
+on:
+  release:
+    types: [published]
+
+jobs:
+  build:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v2
+    - name: Setup .NET
+      uses: actions/setup-dotnet@v1
+      with:
+        dotnet-version: 5.0.x
+        
+    - name: Restore dependencies
+      run: dotnet restore
+      
+    - name: Build
+      run: dotnet build --no-restore
+      
+    - name: Test
+      run: dotnet test --no-build --verbosity normal
+    
+    - name: Create NuGet Package
+      run: dotnet pack -c Release /p:Version=${{ github.event.release.tag_name }} /p:PackageReleaseNotes="See https://github.com/notion-dotnet/notion-sdk-net/releases/tag/${{ github.event.release.tag_name }}"
+      working-directory: ./
+
+    - name: Archive NuGet Package
+      uses: actions/upload-artifact@v1
+      with:
+        name: Notion.Net
+        path: ./Src/Notion.Client/bin/Release/Notion.Net.${{ github.event.release.tag_name }}.nupkg
+
+    - name: Publish Nuget Package
+      run: dotnet nuget push **/*.nupkg --api-key ${{ secrets.nuget_api_key }} --source https://api.nuget.org/v3/index.json --no-symbols true