G-API: Improvement stereo documentation.

* Documentation improvement

* Set valid default values for gapi stereo

* Small doc fix

* Review response

* Review response

* Review response

* Review response

* Revie response

* Review response

* Review response

* Review response

G-API: Documentation for Params (IE and ONNX).

* Applying comments

* Removed type of model from PramsDesc

* Added message for onnx ParamDesc

* Whitespaces

* Review

* Fix comments to review

* Fix comments
Co-authored-by: NAnatoliy Talamanov <anatoliy.talamanov@intel.com>

Hot fix negative MTCNN PNet ROI coordinates

* fix negative roi start

* some more experiments

* clean up

- FFMPEG: "[av1 @ 0000027ac07d1340] Your platform doesn't suppport hardware accelerated AV1 decoding."

Tracking API: fix incorrect structure

* fix incorrect structure of best score id

* video(DaSiamRPN): specify sizes of scalar arrays

- FFmpeg 4.4
- libvpx 1.10.0

[G-API] Generic type documentation

* Put doc about generic type

* Fix comments to review

G-API: Extend MediaFrame to be able to extract additional info besides access

* Extend MediaFrame to be able to extract additional info besides access

* Add default implementation for blobParams()

* Add comment on the default blobParams()

Fix dynamic loading of clBLAS and clFFT (formerly, clAmdBlas and clAmdFft)

* Fix dynamic loading of clBLAS and clFFT

* Update filenames and function names for clBLAS (formerly, clAmdBlas)

* Update filenames and function names for clFFT (formerly, clAmdFft)

* Uncomment teardown of clFFT; tear down clFFT in same way as clBLAS

* Fix generators for clBLAS and clFFT headers

* Update generators to parse recent clBLAS and clFFT library headers

* Update generators to be compatible with Python 3

* Re-generate OpenCV's clBLAS and clFFT headers

* Update function calls to match names in newly generated headers

* Disable (and comment on) teardown code for clBLAS and clFFT

* Renaming *clamd* files

* Renaming *clamdblas* files to *clblas*

* Renaming *clamdfft* files to *clfft*

* Update generator for CL headers

* Update generator to be compatible with Python 3

Fixed trailing whitespace

Update to initInverseRectificationMap documentation for clarity

Added test case for initInverseRectificationMap()
Updated documentation.

Fixed whitespace error in docs

Small update to test function
Now passes success_error_level

final update to inverseRectification documentation

fixed find*, calibrate*, stereo*

fixed decompose*, convert*

Fixed recoverPose, and projectPoints

Fixed typo in docs which resulted in a docs warning

* Fix typo in App.xaml.cs

* Fix typo in App.xaml.cs

* Fix typo in App.xaml.cs