Initial project structure

Signed-off-by: Severin Kaderli <severin@kaderli.dev>

.gitignore

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+build/
+cmake-build-debug/
+.idea/

CMakeLists.txt

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+cmake_minimum_required(VERSION 3.22)
+project(CPP)
+add_subdirectory(hello_world)

hello_world/CMakeLists.txt

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+project(helloworld)
+set(SOURCES main.cpp)
+add_executable(${PROJECT_NAME} ${SOURCES})

hello_world/main.cpp

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+#include <iostream>
+
+int main(int argc, char* argv[])
+{
+    std::cout << "Hello, World!" << std::endl;
+    return 0;
+}