* Added Steps support in DNN Slice layer

* Added code corrections

* dnn(slice): fix OCL and OCL_FP16 processing

Added OpenVINO ARM target

* Added IE ARM target

* Added OpenVINO ARM target

* Delete ARM target

* Detect ARM platform

* Changed device name in ArmPlugin

* Change ARM detection

backport of commit: 61119358
partial backport of commit: dd597616

* Fixed bug with constant Div

* Supported constant mul and div for inputs with different shapes

- dst is not initialized, may include NaN values
- 0*NaN produces NaN

Support for Pool1d layer for OpenCV and OpenCL targets

* Initial version of Pool1d support

* Fix variable naming

* Fix 1d pooling for OpenCL

* Change support logic, remove unnecessary variable, split the tests

* Remove other depricated variables

* Fix warning. Check tests

* Change support check logic

* Change support check logic, 2

Fixing dnn Resize layer for variable input size

* Fix onnx loading of resize/upsample layers for different opset

* group all DynamicResize tests

* cleaned up scales checks

* Simplify branching

Fix loading issue for Faster RCNN model from #16783

* Add a reproducer with multi-output Gather

* Fix an issue with ONNX graph simplifier

* fix build

* Move checks to correct class

* Minor changes for better code appearence

Add support for Conv1D on OpenCV backend

* Add support for Conv1D on OpenCV backend

* disable tests on other targets/backends

* Fix formatting

* Restore comment

* Remove unnecessary flag and fix test logic

* Fix perf test

* fix braces

* Fix indentation, assert check and remove unnecessary condition

* Remove unnecessary changes

* Add test cases for variable weights and bias

* dnn(conv): fallback on OpenCV+CPU instead of failures

* coding style

* Fixed bug in ONNX Mul op

* Replaced node

Fix loading of ONNX models with Resize operation with Opset 11 for newer versions of Pytorch

* Add reproducer for Resize operation from newer versions of Pytorch

* Fix loading of scales parameter for Resize layer

* Change check type for better diagnostic messages

* Fix ONNX loading in issues opencv#17516, opencv#17531

* Add tests for Linear and Matmul layers

* Disable tests for IE versions lower than 20.4

* Skip unstable tests with OpenCL FP16 on Intel GPU

* Add correct test filtering for OpenCL FP16 tests

* Added ReduceSum to ONNX importer

* Fix comments

* Fix Mul

* Supported convolution with non-const weights

* Fix opencl blobs

* Update tests

* Added ONNX BatchNorm subgraph

* Move removing constant inputs to addConstantNodesForInitializers

* Added initializers to ONNXGraphWrapper

* Supported FullyConnected layer with two inputs

* Skipped test

* Fix conditions

* Added OpenCL support

* Supported ReduceMean3D

* Supported Expand layer

* Fix warning

* Added Normalize subgraph

* refactoring

* Used addLayer

* Fix check

* Used addLayer

* Skip failed test

* Added normalize1 subgraph

* Fix comments