Add NuGet publish workflow

Author: score3229

.github/workflows/nuget.yml

@@ -0,0 +1,22 @@
+name: Publish to NuGet
+
+on:
+  push:
+    tags:
+      - 'v*'
+
+jobs:
+  publish:
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-dotnet@v4
+        with:
+          dotnet-version: '8.0.x'
+
+      - run: dotnet restore PS3Sharp/PS3Sharp.csproj
+
+      - run: dotnet pack PS3Sharp/PS3Sharp.csproj -c Release -o ./nupkg
+
+      - run: dotnet nuget push ./nupkg/*.nupkg --api-key ${{ secrets.NUGET_API_KEY }} --source https://api.nuget.org/v3/index.json --skip-duplicate