* add mean op, test=develop

* split forward and backward, test=develop

* set arm_lang default is off. test=develop

* fix resize error, test-develop

* add lookup_dequant_op

* enhance gather, lookup_table arm kernel uts

* enhance beam_search, beam_search_decoder, increment rigster

* get the precision from the real tensor or tensor_array of base_scope in arena/framwork

* register assign and assign_value to kAny

* scale support int32 input

* [NPU] support fill_constant and fill_constant_batch_size_like op bridge and uts

* add sequence_conv op and arm kernel

* add test, test=develop

* test=develop

* test=develop

* test=develop

* test=develop

* test=develop

* test=develop

* test=develop

* test=develop

* test=develop

* test=develop

* test=develop

* test=develop

* test=develop

* test=develop

* modify code style. test=develop

* fix ut, test=develop

* delete unused code, test=develop

* Support lac model, fix bug for argmax lod_reset, test=develop

* fix caliberate error, values from [-128, 127] to [-127, 127], test=develop
* add classify demo and detection demo, test=develop

* Add reduce sum op test
test=develop

add concat ut, test=develop

* fix axis compute, test=develop

* add other axis, test=develop

* fix ut. test=develop

* fix con+relu6/leakyRelu fusion in Fp32, test=develop

* note m=397 in sgemv_int8 ut, test=develop

* fix ios build error. test=develop

* [ARM] add 5x5s2 depthwise conv armv8 impl, test=develop

* [ARM] add int8 5x5s2 dw conv armv7 impl, test=develop

* [ARM] add int8 5x5s2 dw conv impl, test=develop

* [ARM] close int8 conv ut, test=develop

* Optimize the InferShape of several operators.
test=develop

* Remove the new function, resize and CheckPositive in DDim.
test=develop

* Fix a bug in fc_op's InferShape.
test=develop

[arm] fix conv_dw leakyRelu compute error

* refactor 5x5s1 dw conv armv8, test=develop

* [ARM] refactor depthwise conv 5x5s1, and support relu6, leakey relu, test=develop

* [ARM] sgemv support fuse relu6 and leakey relu,test=develop

* [ARM] reduce some conv ut case, test=develop

* [ARM] fix 5x5dw conv pick kernel bug, test=develop

* fix code style, test=develop

* [ARM] fix sgemv fuse relu6 bug, test=develop

* [ARM] fix fp32 5x5s1 dw bug, test=develop

* [ARM] fix fp32 5x5 dw conv pick kernel bug, test=develop

* [NPU] reshape x,y,out node in elementwise ops

add gemm + relu6/leakyrelu fusion

- enhance interp InferShape

* Support bitman backend

[LITE][NPU] Add instance_norm op bridge and unit test, refine the registration of op bridges (#2747)