Adding a nuget auto-pusher.

.github/workflows/common.yml

@@ -0,0 +1,22 @@
+name: Publish to nuget
+on:
+  push:
+    tags:        
+      - 'v*'
+
+jobs:
+  publish:
+    name: build, pack & publish
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+
+      # Publish
+      - name: publish on version change
+        id: publish_nuget
+        uses: rohith/publish-nuget@v2
+        with:
+          PROJECT_FILE_PATH: Kyoo.Common/Kyoo.Common.csproj
+          PACKAGE_NAME: Kyoo.Common
+          NUGET_KEY: ${{secrets.NUGET_API_KEY}}
+          INCLUDE_SYMBOLS: true