chore: init frontend+backend skeleton

CMakeLists.txt

@@ -0,0 +1,14 @@
+cmake_minimum_required(VERSION 3.28)
+project(csp_platform LANGUAGES CXX)
+
+set(CMAKE_CXX_STANDARD 20)
+set(CMAKE_CXX_STANDARD_REQUIRED ON)
+set(CMAKE_CXX_EXTENSIONS OFF)
+
+# Nice defaults
+set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
+
+include(CTest)
+enable_testing()
+
+add_subdirectory(backend)