Workflow to push to Nuget (#1)

* Create nuget-deploy.yml

* Update workflow

* Update name

* Pack the nuget package

* Update working directory

.github/workflows/nuget-deploy.yml

@@ -0,0 +1,19 @@
+name: Public package to NuGet
+on:
+  push:
+    branches: [main]
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    timeout-minutes: 10
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v3
+    - name: Pack nuget package
+      working-directory: ./src/Segment.PublicApi
+      run: dotnet pack -c Release
+    - name: Push nuget package
+      working-directory: ./src/Segment.PublicApi
+      run: dotnet nuget push bin/Release/Segment.PublicApi.*.nupkg -k ${NUGET_API_KEY} --source https://api.nuget.org/v3/index.json --skip-duplicate 
+      env:
+        GITHUB_TOKEN: ${{ secrets.NUGET_API_KEY }}