[G-API] Implement G-API pipeline modeling tool

* Implement G-API pipeline builder tool

* Remove whitespaces from config

* Remove unused unittest stuff

* Fix comments to review

* Fix MAC warning

* Rename to pipeline_modeling_tool

* Move to opencv apps

* Move config to gapi/samples/data

* gapi: samples sources are installed automatically

TiffEncoder write support more depth type

* TiffEncoder write support more depth type

* testing code

* update testing code

* add fallthrough

GAPI FLUID: Enable dynamic dispatching for Split4

* Enable dynamic dispatching for split4

* Add tail proc for split3 and split4

- ONNX output is 1 tensor per defined output instead of N tensors from outputs of "output" layer

- fixed ONNX importer

* Fix wrong MSAN errors.

Because Fortran is called in Lapack, MSAN does not think the memory
has been written even though it is the case.
MSAN does no support well cross-language memory analysis.

* Make a dedicated check.

Add resize layer compatible with ONNX opset13 version

GAPI: Replace resize perf test to imgproc

* resize + test configs

* fluid kernel "add"

* Add fluid core

- Add special case handling when submodule has the same name as parent
- `PyDict_SetItemString` doesn't steal reference, so reference count
  should be explicitly decremented to transfer object life-time
  ownership
- Add sanity checks for module registration input
- Add Python 2 and Python 3 reference counting handling

G-API: Wrap GStreamerSource

* Wrap GStreamerSource into python

* Fixed test skipping when can't make Gst-src

* Wrapped GStreamerPipeline class, added dummy test for it

* Fix no_gst testing

* Changed wrap for GStreamerPipeline::getStreamingSource() : now python-specific in-class method GStreamerPipeline::get_streaming_source()

* Added accuracy tests vs OCV:VideoCapture(Gstreamer)

* Add skipping when can't use VideoCapture(GSTREAMER);
Add better handling of GStreamer backend unavailable;
Changed video to avoid terminations

* Applying comments

* back to a separate get_streaming_source function, with comment
Co-authored-by: NOrestChura <orest.chura@intel.com>

- improve compatibility with further compiler versions
- warnings are not errors by default

hwcap should actually be long.

Left shift of negative values is undefined.

G-API: oneVPL DX11 inference

* Draft GPU infer

* Fix incorrect subresource_id for array of textures

* Fix for TheOneSurface in different Frames

* Turn on VPP param configuration

* Add cropIn params

* Remove infer sync sample

* Remove comments

* Remove DX11AllocResource extra init

* Add condition for NV12 processing in giebackend

* Add VPP frames pool param configurable

* -M Remove extra WARN & INFOs, Fix custom MAC

* Remove global vars from example, Fix some comments, Disable blobParam due to OV issue

* Conflict resolving

* Revert back pointer cast for cv::any