[BenchGC] attach DLTI for mlir module

[xurui1995]

• add code for getting the cpuinfo
• provides --cpu_cache_sizes and --max_vector_width for user to add the dlti manually
• using env GC_NUM_THREADS to set the 'num_threads' of dlti

[xurui1995]

Currently there is a issue for the lib py-cpuinfo on the CI machine, the l1_data_cache_size is from the 'lscpu' output, and the value is 4.5 MiB which can not be converted into int bytes and seems not the per core size.
I am trying some new solutions for getting cache size.