feature request: lookup words in dictionary by partial entry or stem

[telpirion]

Feature description

This feature will allow the user to type a partial dictionary entry or a morphological "stem" and the app will return all dictionary entries that match.

For example, if the search term is "fac-" in the Latin Reader, then the dictionary results will show 'facio,' 'facinus', and 'facior'. The ReadingScreen UI will show the number of results found and will concatenate the results into a single text field.

Implementation requirements

• The feature must use a divide-and-conquer algorithm to find the matches.
• The feature must use the XML list of dictionary keys as the input for the search algorithm.
• The feature must use the existing dictionary result implementation (a la the ReadingScreen composable).
• The dictionary and dictionary search features could be moved into a separate project module.
• The search results could be presented in a flex or grid.

Verification

The feature should include an instrumented test for the Latin Reader and the Greek Reader to ensure correct behavior.