Create a function to convert frequencies to stop_times

[dhersz]

Self-explanatory title.

By the way, can anyone think of a better name than convert_frequencies_to_stop_times()? I like the verb_object() structure, but it's obviously too verbose in this case.

[pedro-andrade-inpe]

The smallest name I could think would be build_stop_times() (build using frequencies).

[dhersz]

Thanks for the suggestion @pedro-andrade-inpe, and sorry for not answering before. build_stop_times() sounds good, but I think that it may be too easily misunderstood as a function that could be used to add arbitrary entries to stop_times, not necessarily from the frequencies table.

Meanwhile, I created the function and (temporarily?) named it frequencies_to_stop_times(). I'm closing the issue, but if anyone got suggestions, please feel free to chime in.