Fix CMake build type

CMakeLists.txt

@@ -8,10 +8,15 @@ project(
   LANGUAGES CXX CUDA)
 
 set(CMAKE_CXX_STANDARD 17)
-set(CMAKE_BUILD_TYPE Release)
 option(BUILD_SHARED_LIBS "Create shared libraries" True)
 option(BUILD_TESTING "Build tests" False)
 
+if(NOT CMAKE_BUILD_TYPE)
+  set(CMAKE_BUILD_TYPE "Release" CACHE STRING "CMake build type" FORCE)
+  set_property(CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS
+    "Debug" "Release")
+endif()
+
 find_package(CUDAToolkit REQUIRED)
 
 include(FetchContent)