Creates a simple getBound_info object, which has a list with a boundID and a type.
Unlike makeParamInfo this is more bare-bones, but keeping it for parallelism
with getParam.
makeBoundInfo(model, nodes, bound)A model such as returned by nimbleModel.
A character string naming a stochastic nodes, such as 'mu'.
A character string naming a bound of the distribution, either 'lower' or 'upper'.
This is used internally by getBound. It is not intended for direct use by a user or even a nimbleFunction programmer.