* [WIP] Support std::vector<phi::Tensor> input and output for DistTensor.
Concat forward and backward are verified.

* Polish code for new dist tensor implementation.

* Fix bug of DistTensor upgrade. Add support functions for std::vector<Tensor> -> std::vector<Tensor>.

* Add support for DistTensor type of std::vector<phi::Tensor> as input or output of operators.
Following testcases are passed.
1. concat: std::vector<phi::Tensor> -> phi::Tensor
2. unbind: phi::Tensor -> std::vector<phi::Tensor>
3. broadcast_tensors: std::vector<phi::Tensor> -> std::vector<phi::Tensor>

* Polish code. Remove useless comments.

* Add update_loss_scaling in skip_op_lists.

* Polish code.

* polish dist teensor design

* adjust constructor

* polish details

* polish details design

* fix compile error

* refactor init tensor impl

* fix reshard test

* polish details

* add unittest for coverage

* add phi forward api gen impl

* add phi backward gen code

* polish api code gen impl

* polish code gen impl

* remove auto_paralel namespace

* add dygraph forward impl

* add for_auto_parallel cond

* fix code gen errors

* add dygraph backward impl

* resolve conflict with develop

* refactor dist api gen impl

* revert origin api gen impl

* replace template for override func

* fix dnnl marco error

* revert third_party change

* add with distributed marco

* Update grad_tensor_holder.cc details

* merge dist tensor constructor

* change test tensor to replicate

* fx typo

* resolve conflict with develop

* fix out dim error