[examples] added skeleton for pytorch wrapper

cmake/FindTensorFlow.cmake

@@ -0,0 +1,21 @@
+include(FindPackageHandleStandardArgs)
+unset(TENSORFLOW_FOUND)
+
+execute_process(COMMAND python -c "from os.path import dirname; import tensorflow as tf; print(dirname(dirname(tf.sysconfig.get_include())))"
+                OUTPUT_VARIABLE TF_INC OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_QUIET)
+execute_process(COMMAND python -c "import tensorflow as tf; print(tf.sysconfig.get_lib())"
+                OUTPUT_VARIABLE TF_LIB OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_QUIET)
+execute_process(COMMAND python -c "import tensorflow as tf; print(tf.__cxx11_abi_flag__ if \"__cxx11_abi_flag__\" in tf.__dict__ else 0)"
+                OUTPUT_VARIABLE TF_ABI OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_QUIET)
+
+find_package_handle_standard_args(TensorFlow DEFAULT_MSG TF_INC TF_LIB)
+
+# set external variables for usage in CMakeLists.txt
+if(TensorFlow_FOUND)
+    set(TensorFlow_LIBRARIES ${TF_LIB})
+    set(TensorFlow_INCLUDE_DIRS ${TF_INC})
+    set(TensorFlow_ABI ${TF_ABI})
+endif()
+
+# hide locals from GUI
+mark_as_advanced(TF_INC TF_LIB TF_ABI)