Merge pull request #25273 from dkurt:tflite_new_layers

TFLite new layers #25273

### Pull Request Readiness Checklist

resolves https://github.com/opencv/opencv/issues/25272, https://github.com/opencv/opencv/issues/24965

**Merge with extra**: https://github.com/opencv/opencv_extra/pull/1160

See details at https://github.com/opencv/opencv/wiki/How_to_contribute#making-a-good-pull-request

- [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
- [x] There is accuracy test, performance test and test data in opencv_extra repository, if applicable
      Patch to opencv_extra has the same branch name.
- [x] The feature is well documented and sample code can be built with the project CMake

modules/dnn/test/test_tflite_importer.cpp

@@ -235,6 +235,18 @@ TEST_P(Test_TFLite, replicate_by_pack) {
     testLayer("replicate_by_pack", l1, lInf);
 }
 
+TEST_P(Test_TFLite, split) {
+    testLayer("split");
+}
+
+TEST_P(Test_TFLite, fully_connected) {
+    if (backend == DNN_BACKEND_CUDA)
+        applyTestTag(CV_TEST_TAG_DNN_SKIP_CUDA, CV_TEST_TAG_DNN_SKIP_CUDA_FP16);
+    if (backend == DNN_BACKEND_VKCOM)
+        applyTestTag(CV_TEST_TAG_DNN_SKIP_VULKAN);
+    testLayer("fully_connected");
+}
+
 INSTANTIATE_TEST_CASE_P(/**/, Test_TFLite, dnnBackendsAndTargets());
 
 }}  // namespace