cmake: claim knowledge of CMake 3.29

This is true because the code considers 3.29 in the next block. Of
particular importance, this sets CMP0115 which scans C++20 sources by
default. This allows tests to use `add_executable(t uses_module.cpp)`
without having to explicitly say "I want to use `import ctre;`".

In the non-module build, explicitly turn off scanning since it is not
used.

Author: mathstuf

CMakeLists.txt

@@ -1,4 +1,4 @@
-cmake_minimum_required(VERSION 3.14.0)
+cmake_minimum_required(VERSION 3.14...3.29)
 
 if(CMAKE_VERSION VERSION_GREATER_EQUAL "3.29.20240416") 
 	set(CMAKE_EXPERIMENTAL_CXX_IMPORT_STD "0e5b6991-d74f-4b3d-a41c-cf096e0b2508")
@@ -113,6 +113,7 @@ else()
 	endif()
 
 	target_compile_features(${PROJECT_NAME} INTERFACE cxx_std_${CTRE_CXX_STANDARD})
+	set_property(TARGET ${PROJECT_NAME} PROPERTY CXX_SCAN_FOR_MODULES 0)
 
 	install(TARGETS ${PROJECT_NAME} EXPORT ${PROJECT_NAME}-targets)
 endif()