Add CI workflow (#2)

Author: hazzik

.github/workflows/ci.yml

@@ -0,0 +1,21 @@
+name: CI
+
+on: 
+  push:
+    tags: [ '*' ]
+
+jobs:
+  push:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v3
+    - name: Setup .NET
+      uses: actions/setup-dotnet@v3
+      with:
+        dotnet-version: 6.0.x
+    - name: Pack
+      run: nuget pack -OutputDirectory ./dist -Version ${{ github.ref_name }}
+    - name: Push
+      run: nuget push dist/*.nupkg ${{ secrets.NUGET_API_KEY }} -Source https://api.nuget.org/v3/index.json