* Introduce GAPI_TRANSFORM initial interface

Comes along with simple tests and kernel package changes

* Fix documentation and adjust combine() function

* Fix stuff after rebasing on master

* Remove redundant functionality

* Refactoring according to review feedback provided

* Fixes according to review feedback

* Reconsider transformations return and fix a warning

* Fixes from code review

* Add a new simple test

* Cleanup, added tests on GScalar, GMatP, GArray

Test request by #14583 (#14800)

* add test to show the undistort bug

* move test to calib3d

Changed quotes to brackets when including public includes (#14741)

G-API: Render (#14700)

* cv::Render

Implement OCVRedner for BGR as input

* Support two plane cv::Render::run

* Snapshot

* Add RenderCreator

* text2Points

* Snapshot

* Refactoring tests

* Remove text2points

* Fix render input data type in tests

* Refactoring

* Fix headers
* Change struct fields name

* Fix headers

* Fix warnings

* Replace cv::Scalar -> cv::gapi::own::Scalar

* Add test

* PutText and rectangle case

* Fix comments to review

* Fix comments to review

* Fix comments to review

* Create render_priv.hpp
* Implement BGR2NV12
* Fix NV12 test

* Fix comments to review

* Add header for GAPI_Assert

* Remove Inference Engine 2018R3 and 2018R4

* Fix 2018R5

libvpx: 1.8.0

Fix for MSVS2019 build warnings (#14743)

* AVX512 arch support for MSVS

* Fix for MSVS2019 build warnings: updated integral() AVX512 implementation

* Fix for MSVS2019 build warnings: reworked v_rotate_right AVX512 implementation

* fix indentation

backporting of commit: d3d13c41

backporting of commit: f6230ae0