What if hts_validate_variable_list made shared name automatically?

[ashleyasmus]

Related to #164
I like this, can we do this automatically? Check for common separators like :, -, etc.?

travelSurveyTools/data-raw/create_test_data.R

Line 307 in bf48868

variable_list[, shared_name := ifelse(grepl(":", description),