* - Draft of implementation of refactoring

- compilation fix

* - Fixes after review

* - Removed unnecessary comment

* added op cast functionality for fp32/bf16

* added newline

* added entries in static mode white list and unity build

* fixed failing tests

* changes after review

* added formatting

* upgraded tests file as reviewer suggested

* changes after review

* minor change

* added support for most matmul cases

* added more functionality

* full functionality of matmul op, fp32 only

* added bf16 tests and functionality

* added formatting

* changes after review

* minor change

* added reviewers suggestions

* - Added clearing oneDNN per executor

* - Executor is nt always having FLAGS_use_mkldnn set to true

* fix cache key in concat oneDNN kernel

* key simplified

* - introduced fix onednn 2.2 version

* - compilation fix

* Unification of bfloat16 enablement process and refactor

* Remove unnecessary function

* Standardize the output name search

* Add conv transpose BF16

* Share function GetWeightsTz

* Adjust to review and fix op compatibility

* Add bias to unique handler name

* Remove errors related to paddle enforce

* Add conv2d_transpose to bf16 list and kernel refator

* modify error message based on comments

* edit code according to review.

* Correct spelling according to review.

* - Added UT for testing elementwise_mul caching

* lint fixes

* Add mkldnn nearest_interp and bilinear_interp op
* don't run mkldnn interpolate in default
* add interpolate_mkldnn_pass

* added external reorder to profiler

* added external and internal reorders to profiler

* added internal and external reorder to profiler

* added formatting to int/ext reorder commit

* removed unnecessary comment

- Make sure that oneDNN memory descriptors are created only once at
first iteration.

* Add bf16 pool2d and unify bf16 unit tests

* Add change default ops test

* Add bf16 matmul, fc, elementwise add and mul

* Correct unit test

* Add bfloat16 softmax and gelu

* Add pass attr bfloat16_enabled_op_types

* Changes from review

* - Added sum bf16 oneDNN

test=develop

* - Fix to UT of sum bf16

test=develop

test=develop