Move level_zero_helpers to utils and remove duplicated file

1) Move level_zero_helpers to utils
   and rename it to utils_level_zero.
2) Remove the examples/common/utils_level_zero.h file (duplicated code)
3) Use new utils_level_zero in examples and benchmarks.

Signed-off-by: Lukasz Dorau <lukasz.dorau@intel.com>

Author: ldorau

benchmark/CMakeLists.txt

@@ -46,7 +46,8 @@ function(add_umf_benchmark)
         PRIVATE ${UMF_CMAKE_SOURCE_DIR}/include
                 ${UMF_CMAKE_SOURCE_DIR}/src/utils
                 ${UMF_CMAKE_SOURCE_DIR}/test/common
-                ${UMF_CMAKE_SOURCE_DIR}/examples/common)
+                ${UMF_CMAKE_SOURCE_DIR}/examples/common
+                ${LEVEL_ZERO_INCLUDE_DIRS})
 
     target_link_directories(${BENCH_NAME} PRIVATE ${ARG_LIBDIRS})
 
@@ -108,6 +109,7 @@ if(LINUX)
     set(LIBS_OPTIONAL ${LIBS_OPTIONAL} m)
 endif()
 if(UMF_BUILD_GPU_TESTS AND UMF_BUILD_LEVEL_ZERO_PROVIDER)
+    set(SRCS_OPTIONAL ${SRCS_OPTIONAL} ../src/utils/utils_level_zero.cpp)
     set(LIBS_OPTIONAL ${LIBS_OPTIONAL} ze_loader)
     # TODO add CUDA
 endif()
@@ -116,7 +118,7 @@ endif()
 
 add_umf_benchmark(
     NAME ubench
-    SRCS ubench.c
+    SRCS ubench.c ${SRCS_OPTIONAL}
     LIBS ${LIBS_OPTIONAL}
     LIBDIRS ${LIB_DIRS})
 

examples/CMakeLists.txt

@@ -49,6 +49,7 @@ if(UMF_BUILD_GPU_EXAMPLES
     add_umf_executable(
         NAME ${EXAMPLE_NAME}
         SRCS level_zero_shared_memory/level_zero_shared_memory.c
+             ${UMF_CMAKE_SOURCE_DIR}/src/utils/utils_level_zero.cpp
         LIBS disjoint_pool ze_loader umf)
 
     target_include_directories(
@@ -127,6 +128,7 @@ if(UMF_BUILD_GPU_EXAMPLES
     add_umf_executable(
         NAME ${EXAMPLE_NAME}
         SRCS ipc_level_zero/ipc_level_zero.c
+             ${UMF_CMAKE_SOURCE_DIR}/src/utils/utils_level_zero.cpp
         LIBS disjoint_pool ze_loader umf)
 
     target_include_directories(