Merge pull request #15869 from TolyaTalamanov:at/plaidml-backend

G-API: Implement PlaidML2 backend

* PlaidML backend init version

* Add test

* Support multiply inputs/outputs in PlaidML2 backend

* Fix comment to review

* Add HAVE_PLAIDML macros

* Move plaidml tests to separate file

* Fix comment to review

* Fix cmake warning

* Fix comments to review

* Fix typos

overload -> overflow

* Fix comments to review

* Clean up

* Remove spaces from cmake scripts
* Disable tests with bitwise operations

* Use plaidml::exec::Binder

modules/gapi/test/gapi_sample_pipelines.cpp

@@ -11,7 +11,8 @@
 #include <ade/util/iota_range.hpp>
 #include "logger.hpp"
 
-#include <opencv2/gapi/render/render.hpp>
+#include <opencv2/gapi/plaidml/core.hpp>
+
 
 namespace opencv_test
 {
@@ -315,4 +316,5 @@ TEST(GAPI_Pipeline, CanUseOwnMatAsOutput)
     // FIXME add overload for apply(cv::gapi::own::Mat in, cv::gapi::own::Mat& out)
     EXPECT_NO_THROW(comp.apply({in_own_mat}, {out_own_mat}));
 }
+
 } // namespace opencv_test