update and export choose_dictionary_language

[AlexAxthelm]

Exporting choose_dictionary_language in support of RMI-PACTA/workflow.pacta.dashboard#21

While I was touching the function, reworked it to not use dplyr::transmute, which has been superseded (now relies only on base:: functions), add tests, and some checks for validity prior to processing.

Side effect: now emits a data.frame(), rather than tibble if data is a tibble.

Most likely the first of several PRs to export functions that are needed in workflow.pacta.dashboard

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 1.96%. Comparing base (5f002dc) to head (714bdbe).

Additional details and impacted files

@@           Coverage Diff            @@
##            main     #99      +/-   ##
========================================
+ Coverage   0.80%   1.96%   +1.15%     
========================================
  Files         25      25              
  Lines       1619    1631      +12     
========================================
+ Hits          13      32      +19     
+ Misses      1606    1599       -7     

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[AlexAxthelm]

Closing in favor of refactoring to new package.