Add github actions (#1)

Update workflow

.github/workflows/dotnet.yml

@@ -0,0 +1,38 @@
+# This workflow will build a .NET project
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-net
+
+name: ZZZBotris.Net CI
+
+on:
+  push:
+    branches: [ "master" ]
+  pull_request:
+    branches: [ "master" ]
+
+jobs:
+
+  build:
+    strategy:
+      matrix:
+        os: [ ubuntu, windows, macos ]
+    runs-on: ${{matrix.os}}-latest
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: Setup .NET
+      uses: actions/setup-dotnet@v4
+      with:
+        dotnet-version: 8.0.x
+    - name: Install Dependencies
+      run: dotnet restore
+    - name: Publish
+      run: |
+        mkdir ./pub
+        dotnet publish ZZZTOJ.Botris -p:PublishSingleFile=true --self-contained false -o ./pub
+    - name: Remove pdb files
+      run: rm ./pub/*.pdb
+    - name: Upload dotnet test results
+      uses: actions/upload-artifact@v4
+      with:
+        name: ZZZBotris_${{ matrix.os }}
+        path: ./pub