* support ir api form prim

* support ir api for prim

* support vjp prim mode in new ir

* remove useless code

* remove useless code

* auto code generator for primitive vjp methods

* add vjp and backend manual and fix segment fault

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Co-authored-by: Ncyber-pioneer <chenzhuo@tju.edu.cn>
Co-authored-by: Ncxxly <chenxx_id@163.com>