Codes/Performance/Memory Improvement

[T-rvw]

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To improve coding details:

• define FORCEINLINE macro explicitly to force some methods to compile as inline.
• force all string hash to be executed in the compile time.
  • Only init logics will use runtime hash now.
• std::move -> MoveTemp similar to UE so that we can get static_assert if the parameter is a const or already rvalue.
  • Engine side needs to replace. But it will include many header files?

To adopt modern cpp features:

• C++ 20 std::span helps to reduce code size

To add basic infrastructure:

• add allocator classes to improve memory layout.
  • std::unique_ptr needs to write a customized deleter class for it to free memory by ourselves
• JobSystem to support multiple threads
• SIMD Math