ci: Add workflow

Author: phnx47

.github/workflows/release-tag.yml

@@ -0,0 +1,23 @@
+name: "release-tag"
+
+on:
+  push:
+    branches:
+      - master
+    tags:
+      - 2.*
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v1
+      - name: Setup .NET Core
+        uses: actions/setup-dotnet@v1
+      - name: Build
+        run: dotnet build -c Release
+      - name: Tests
+        run: dotnet test -c Release --no-build
+      - name: Pack
+        run: dotnet pack src -c Release  --no-build -o artifacts/