Loads a TensorFlow plugin.
"library_location" can be a path to a specific shared object, or a folder.
If it is a folder, all sahred objects that are named "libtfkernel*" will be
loaded. When the library is loaded, kernels registered in the library via the
REGISTER_* macros are made available in the TensorFlow process.
library_location: Path to the plugin or the folder of plugins. Relative or absolute filesystem path to a dynamic library file or folder.
OSError: When the file to be loaded is not found.
RuntimeError: when unable to load the library.