build client in GH actions

.github/workflows/build-client.yml

@@ -0,0 +1,31 @@
+name: Build Client
+
+on:
+  push:
+    branches:
+      - dev
+  pull_request:
+
+jobs:
+  windows:
+    name: Build on Windows 
+    runs-on: windows-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Create build dir
+      run: mkdir -p build
+    - name: Run CMake
+      run: cd build && cmake ..
+    - name: Build
+      run: make client
+  linux:
+    name: Build on Linux (Ubuntu) 
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: Create build dir
+      run: mkdir -p build
+    - name: Run CMake
+      run: cd build && cmake ..
+    - name: Build
+      run: make client