chore: add CMake files for GoogleTest integration and set compiler options

Author: bialger

cmake/IncludeExternalLibraries.cmake

@@ -0,0 +1,13 @@
+include(FetchContent)
+
+# GoogleTest
+# For Windows: prevent overriding the parent project's compiler/linker settings
+set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
+
+FetchContent_Declare(
+    googletest
+    GIT_REPOSITORY https://github.com/google/googletest.git
+    GIT_TAG v1.14.0
+)
+
+FetchContent_MakeAvailable(googletest)

cmake/SetCompilerOptions.cmake

@@ -0,0 +1,33 @@
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
+
+if(NOT CMAKE_BUILD_TYPE)
+    set(CMAKE_BUILD_TYPE Release)
+endif()
+
+
+if(CMAKE_CXX_COMPILER_ID STREQUAL "MSVC")
+    set(CMAKE_CXX_FLAGS_DEBUG "/MDd")
+    set(CMAKE_CXX_FLAGS_RELEASE "/O2")
+else()
+    set(CMAKE_CXX_FLAGS_DEBUG "-g -O0")
+    set(CMAKE_CXX_FLAGS_RELEASE "-O3")
+endif()
+
+message(STATUS "Build type: ${CMAKE_BUILD_TYPE}")
+message(STATUS "Compiler: ${CMAKE_CXX_COMPILER_ID}")
+message(STATUS "Compiler version: ${CMAKE_CXX_COMPILER_VERSION}")
+message(STATUS "Compiler flags: ${CMAKE_CXX_FLAGS}")
+message(STATUS "Compiler flags debug: ${CMAKE_CXX_FLAGS_DEBUG}")
+message(STATUS "Compiler flags release: ${CMAKE_CXX_FLAGS_RELEASE}")
+
+# Windows: place runtime artifacts next to the executable
+if(WIN32)
+    set(CMAKE_LIBRARY_OUTPUT_DIRECTORY_DEBUG ${CMAKE_BINARY_DIR})
+    set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_DEBUG ${CMAKE_BINARY_DIR})
+    set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY_DEBUG ${CMAKE_BINARY_DIR})
+    set(CMAKE_LIBRARY_OUTPUT_DIRECTORY_RELEASE ${CMAKE_BINARY_DIR})
+    set(CMAKE_RUNTIME_OUTPUT_DIRECTORY_RELEASE ${CMAKE_BINARY_DIR})
+    set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY_RELEASE ${CMAKE_BINARY_DIR})
+endif()