LSTMCell/Sequence v1, reference implementations and decompose transformations for LSTM/GRU/RNN Cells (#2000)
* validate_and_infer_types() implementation
* input parameter validation for LSTM, GRU and RNN
* style-check applied
* Add LSTMSequence dynamic shape validation and test props for RNNCell, GRUCell, LSTMCell and LSTMSequence.
* recurrent_sequence.hpp moved to ngraph/core/include/ngraph/op/util/
* style check applied
* removed unused variable from LSTMSequence::validate_and_infer_types
* Add missing newline mark at the end of file.
* Add supression macro for FusedOp deprecation.
* Add element type initialization
* transpose,rnn cell reference implementations
* Apply PR review remarks
* reference implementations for cells op, single layer tests, align lstm cell/sequence according to the spec
* lstm/gru/rnn cell decompostion transformations
* ngraph codestyle
* clean up
* ngraph code style
* change inheritance of Cells, fix build
* fix build
* fix build again
* remove Peepholes from LSTMSeq, fix copy_runtime_info in transformations
* Rewrite tests to use gtest exception assertions.
* resolve tests issues
* ngraph codestyle
* add missed files
* fix typeprop tests
* fix lstm sequence checks
* fix arm build
* fix arm again
* delete unnecessary file
* add convert weghts format function, enable lstm test, resolve review comments
* add ngraph builders
* ngraph codestyle
* fix unit tests
* revert transpose reference implementation
* revert LSTM Cell v0, add LSTMCell v1, update transformation lstm_cell_to_cell_ie
* v1 version of LSTMCell op
* LSTMSequence v1 operation, exclude LSTMSeq from opset4
* fix python api tests
* resolve review comments, tests for decomposition transformations, switch lstm cell to opset4 in mo
Co-authored-by: Szymon Durawa <szymon.durawa@intel.com>
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