Prof algo

[SpiritedAwayCN]

Description of changes:

• Add profiling step to select best algorithm for cublas GEMM kernels

Note:

• There's no command flag to disable the profiling yet. please search NO_PROF in linear_kernel.cu and inc_multihead_self_attention.cu, you can find a commented return at the beginning of the line. Removing all these comments to enable all the returns can disable this.
• The main modifications were findBestAlgoID() funcions in both linear_kernel.cu and inc_multihead_self_attention.cu, where the profile code were implemented.
• QKV kernels need to be grouped, and profile codes in inc_multihead_self_attention.cu requires slight changes. Please search To Xinhao in inc_multihead_self_attention.cu, the comment can help you to easily modify the profile code.
• Some utilization functions to be moved to a better place and maybe some of the code violates the format/style rules.

Before merging:

• Did you update the flexflow-third-party repo, if modifying any of the Cmake files, the build configs, or the submodules?