[HIPIFY] Add cudaMallocManaged -> hipMallocManaged

+ Add mapping for corresponding data types
+ Add a test
+ Update docs


[ROCm/hip commit: d20ae3b50a]

projects/hip/hipify-clang/src/CUDA2HIP_Driver_API_functions.cpp

@@ -164,8 +164,8 @@ const std::map<llvm::StringRef, hipCounter> CUDA_DRIVER_FUNCTION_MAP{
   // cudaHostAlloc
   {"cuMemAllocHost",                                       {"hipMemAllocHost",                                         "", CONV_MEMORY, API_DRIVER, HIP_UNSUPPORTED}},
   {"cuMemAllocHost_v2",                                    {"hipMemAllocHost",                                         "", CONV_MEMORY, API_DRIVER, HIP_UNSUPPORTED}},
-  // no analogue
-  {"cuMemAllocManaged",                                    {"hipMemAllocManaged",                                      "", CONV_MEMORY, API_DRIVER, HIP_UNSUPPORTED}},
+  // cudaMallocManaged
+  {"cuMemAllocManaged",                                    {"hipMemAllocManaged",                                      "", CONV_MEMORY, API_DRIVER}},
   // no analogue
   // NOTE: Not equal to cudaMallocPitch due to different signatures
   {"cuMemAllocPitch",                                      {"hipMemAllocPitch",                                        "", CONV_MEMORY, API_DRIVER, HIP_UNSUPPORTED}},