Merge pull request #26469 from vpisarev:move_gapi_to_contrib_part1

Removed g-api from the main repo #26469

Following #25000.
CI patch: https://github.com/opencv/ci-gha-workflow/pull/196

This is migration of G-API from opencv to opencv_contrib, part 1.
Here we simply remove G-API from the main repo. The next patch should bring G-API to opencv_contrib.

- [x] I agree to contribute to the project under Apache 2 License.
- [x] To the best of my knowledge, the proposed patch is not based on a code under GPL or another license that is incompatible with OpenCV
- [x] The PR is proposed to the proper branch
- [x] There is a reference to the original bug report and related work
- [ ] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
- [ ] The feature is well documented and sample code can be built with the project CMake

modules/python/src2/typing_stubs_generation/predefined_types.py

@@ -118,38 +118,6 @@ _PREDEFINED_TYPES = (
                          export_name="DescriptorExtractor"),
     AliasTypeNode.class_("FeatureExtractor", "Feature2D",
                          export_name="FeatureExtractor"),
-    AliasTypeNode.union_("GProtoArg",
-                         items=(AliasRefTypeNode("Scalar"),
-                                ASTNodeTypeNode("GMat"),
-                                ASTNodeTypeNode("GOpaqueT"),
-                                ASTNodeTypeNode("GArrayT"))),
-    SequenceTypeNode("GProtoArgs", AliasRefTypeNode("GProtoArg")),
-    AliasTypeNode.sequence_("GProtoInputArgs", AliasRefTypeNode("GProtoArg")),
-    AliasTypeNode.sequence_("GProtoOutputArgs", AliasRefTypeNode("GProtoArg")),
-    AliasTypeNode.union_(
-        "GRunArg",
-        items=(AliasRefTypeNode("Mat", "MatLike"),
-               AliasRefTypeNode("Scalar"),
-               ASTNodeTypeNode("GOpaqueT"),
-               ASTNodeTypeNode("GArrayT"),
-               SequenceTypeNode("GRunArg", AnyTypeNode("GRunArg")),
-               NoneTypeNode("GRunArg"))
-    ),
-    AliasTypeNode.optional_("GOptRunArg", AliasRefTypeNode("GRunArg")),
-    AliasTypeNode.union_("GMetaArg",
-                         items=(ASTNodeTypeNode("GMat"),
-                                AliasRefTypeNode("Scalar"),
-                                ASTNodeTypeNode("GOpaqueT"),
-                                ASTNodeTypeNode("GArrayT"))),
-    AliasTypeNode.union_("Prim",
-                         items=(ASTNodeTypeNode("gapi.wip.draw.Text"),
-                                ASTNodeTypeNode("gapi.wip.draw.Circle"),
-                                ASTNodeTypeNode("gapi.wip.draw.Image"),
-                                ASTNodeTypeNode("gapi.wip.draw.Line"),
-                                ASTNodeTypeNode("gapi.wip.draw.Rect"),
-                                ASTNodeTypeNode("gapi.wip.draw.Mosaic"),
-                                ASTNodeTypeNode("gapi.wip.draw.Poly"))),
-    SequenceTypeNode("Prims", AliasRefTypeNode("Prim")),
     AliasTypeNode.array_ref_("Matx33f",
                              array_ref_name="NumPyArrayFloat32",
                              shape=(3, 3),
@@ -168,32 +136,6 @@ _PREDEFINED_TYPES = (
                              dtype="numpy.float64"),
     NDArrayTypeNode("vector<uchar>", dtype="numpy.uint8"),
     NDArrayTypeNode("vector_uchar", dtype="numpy.uint8"),
-    TupleTypeNode("GMat2", items=(ASTNodeTypeNode("GMat"),
-                                  ASTNodeTypeNode("GMat"))),
-    ASTNodeTypeNode("GOpaque", "GOpaqueT"),
-    ASTNodeTypeNode("GArray", "GArrayT"),
-    AliasTypeNode.union_("GTypeInfo",
-                         items=(ASTNodeTypeNode("GMat"),
-                                AliasRefTypeNode("Scalar"),
-                                ASTNodeTypeNode("GOpaqueT"),
-                                ASTNodeTypeNode("GArrayT"))),
-    SequenceTypeNode("GCompileArgs", ASTNodeTypeNode("GCompileArg")),
-    SequenceTypeNode("GTypesInfo", AliasRefTypeNode("GTypeInfo")),
-    SequenceTypeNode("GRunArgs", AliasRefTypeNode("GRunArg")),
-    SequenceTypeNode("GMetaArgs", AliasRefTypeNode("GMetaArg")),
-    SequenceTypeNode("GOptRunArgs", AliasRefTypeNode("GOptRunArg")),
-    AliasTypeNode.callable_(
-        "detail_ExtractArgsCallback",
-        arg_types=SequenceTypeNode("GTypesInfo", AliasRefTypeNode("GTypeInfo")),
-        ret_type=SequenceTypeNode("GRunArgs", AliasRefTypeNode("GRunArg")),
-        export_name="ExtractArgsCallback"
-    ),
-    AliasTypeNode.callable_(
-        "detail_ExtractMetaCallback",
-        arg_types=SequenceTypeNode("GTypesInfo", AliasRefTypeNode("GTypeInfo")),
-        ret_type=SequenceTypeNode("GMetaArgs", AliasRefTypeNode("GMetaArg")),
-        export_name="ExtractMetaCallback"
-    ),
     AliasTypeNode.class_("LayerId", "DictValue"),
     AliasTypeNode.dict_("LayerParams",
                         key_type=PrimitiveTypeNode.str_(),