Currently most of the rust recipes use this code but it is all piecemeal.
Turn the code into a class where things can start to be rationalised. Ultimately
some of the data and python code should be moved to a python library but one step
at a time.
No functionality changes.
(From OE-Core rev: 3795285cbf362e13b8151bfdbe1bce999ac28641)
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
