changed the function to "TypeIdToString", and use the Type::ToString() function,
instead of TypeId-String map.

changed the DtypeToTypeId together, the original StringToType can be used.

added a new interface StringToTypeId.

it's unreasonable to change the node when generating kernel json.
instead, it should be set in a pass.

most of the operators in original akg_kernel_attrs_process are not longer used,
so we deleted them, leaving only the "Cast" and "MatMul/BatchMatMul".

* change the graphkernel's passes code(backend/optimizer/graph_kernel/*) to the
  new namespace `mindspore::graphkernel`, to decouple from `mindspore::opt`.
* change the original `mindspore::opt::graphkernel` to `mindspore::graphkernel::inner` (graph_kernel/model)
* change the original `mindspore::opt::expanders` to `mindspore::graphkernel::expanders` (graph_kernel/expanders)

TODO: modify graph_kernel_flags, kernel_compiler/akg/

The "throw" statement is not allowed in mindspore project (codedex check),
so we remove the self-define exception and replace with MS_LOG(EXCEPTION).

In GraphKernelExpanders, we check the return value instead.

The rollback function in ArithmeticSimplify / TrnasformOpOptimizer
is not supported now.

what's more,
changed the c++ op expanders from .h files to .cc files,
the OpExpanderRegister is called in each .cc file, likes
the operator registers in mindspore.

modifications for pass transform_op_optimizer:
1. Changed the maxflow-mincut algorithm to the Dinic's Algorithm,
   since bug exists in the original ISAP codes.
   if the algorithm is slow, we can apply some optimization for it. (e.g. current-arc optimization)
2. Added the pass TransformOpOptimizer in OptLevel_3.
   this pass collects nodes around the specific transform operator (only Transpose now),
   and use the mincut algorithm to get a plan, then re-link the original graph and
   re-inference the shape and format of graph.

modifications for litegraph:
1. the class Node inherits from std::enable_shared_from_this，so we can get a shared_ptr by a pure pointer.
2. modified the Infer interface. it don't change the node, only inference the infos and return them.

This reverts commit b077aa1cab.

Revert "[feat] [assistant] [I3T96X] add new Dataset operator LibriSpeechDataset"

This reverts commit 4e6f7dc97d.

delete pass_registry_test.cc

comment  hiai_nlu_model_multi.pb related  line

Add a subdirectory "model" in the "backend/optimizer/graph_kernel" for litegraph.
Implement two interfaces "AnfGraph2LiteGraph" and "LiteGraph2AnfGraph".

The litegraph will be the base data structure when we migrate the GraphKernel code
from python("mindspore/_extends/graph_kernel") to c++.