generate_mod_spec: Generate mod_spec list for use in yada functions
In MichaelHoltonPrice/yada: Yet Another Demographic Analysis package

A simple function that provides assistance in generating the list-format for mod_spec expected by yada functions

1	generate_mod_spec(problem, model_params, cdep_spec, uni_variable = NA)

`problem`	Object containing the problem file for current mod_spec
`model_params`	Data frame containing variable parameters for the best performing models (generated using 'get_best_univariate_params()')
`cdep_spec`	Distinction of a conditionally independent ('indep') or conditionally dependent ('dep') model.
`uni_variable`	Trait name used for univariate model. If left as 'NA', the mod_spec for multivariate models is generated.