JIT-compile TensorFlow functions

[redeboer]

The TF backend currently does not decorate the lambdified function with tf.function nor jit_compile it.

tensorwaves/src/tensorwaves/function/sympy/__init__.py

Lines 237 to 243 in 876e40e

	return _sympy_lambdify(
	expression,
	symbols,
	modules=tnp,
	printer=TensorflowPrinter(),
	use_cse=use_cse,
	)