add basic github action

Author: Meir017

.github/workflows/ci.yaml

@@ -0,0 +1,18 @@
+name: CI
+
+on: [push]
+
+jobs:
+    build:
+        runs-on: ubuntu-latest
+    
+        steps:
+        - uses: actions/checkout@v4
+    
+        - name: Setup .NET 8
+          uses: actions/setup-dotnet@v4
+          with:
+            dotnet-version: 8.0.x
+    
+        - name: Build
+          run: dotnet build src