* add new ops for ernie, test=develop

* drop lookuptable, test=develop

* update cast compute, test=develop

* add slice gather op, test=develop

test=develop test=xpu

* optimize conv_dw profiler

* fix build conv_dw_3x3s1 bug

* update conv_dw_3x3s2

* fxi foormat test=develop

* fix compute error

* fix format, test=develop

test=develop,test=document_fix

* speed up vector assignment, test=develop

* update op_desc with c-string, test=develop

* add transpose reshape flatten op, test=develop

* address review comments, test=develop

* update compatible_pb.cc, test=develop

* using unique_ptr in fbs::desc, test=develop

* add fbs to compatible_pb, test=develop

* update model_parser functions, test=develop

* fix bugs, test=develop

* [Ascend] add fc op

* [Ascend] fix fc test

* [Ascend] fix code format

* [Ascend] modify the comment

* fix sequence pool grad compute error, test=develop

* fix sequence pool grad run, test=develop

* fix format test=develop

[Core] Fix the missing of the input and output scale after the lite_elementwise_activation_fuse_pass is applied (#4066)

* [ascend] add softmax and dropout op, test=develop

* [Ascend] address review comments, test=develop

* add support for three-dimentional input in reduce max test=develop

* add view suffix to read-only classes for flatbuffers, test=develop

* add some write-apis for flatbuffers, test=develop

* [ascend] add pool and elementwise op, test=develop

* [ascend] add batch_norm op and simpify tensor update, test=develop

test=develop

* change pooling3x3s2max padding right to intrisic. test=develop

* add int32->int64 cast arm cpu kernel. test=develop