* optimize flashdecodingattention: refactor code with different key cache layout(from [num_blocks, num_kv_heads, block_size, head_size] to [num_blocks, num_kv_heads, head_size/x, block_size, x])
* [pre-commit.ci] auto fixes from pre-commit.com hooks
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* refactor compilation mechanism and unified multi hw
* fix file path bug
* add init.py to make pybind a module to avoid relative path error caused by softlink
* delete duplicated micros
* fix micros bug in gcc
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