build: add workflow

.github/workflows/ci.yml

@@ -0,0 +1,29 @@
+name: C++ CI
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    branches:
+      - main
+
+jobs:
+  build-and-test:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v3
+
+      - name: Install dependencies
+        run: sudo apt-get update && sudo apt-get install -y build-essential g++ cmake
+
+      - name: Configure CMake
+        run: cmake -S . -B build
+
+      - name: Build
+        run: cmake --build build -- -j$(nproc)
+
+      - name: Run tests
+        run: ctest --test-dir build --output-on-failure

src/ArgParser/ArgParser.cpp

@@ -1,5 +1,6 @@
 #include "ArgParser/ArgParser.hpp"
 
+#include <cstring>
 #include <iostream>
 
 namespace ArgumentParser {