Add support for semi-automated species matching

[ezwelty]

The workflow developed for falling-fruit/fruitr to match to the Falling Fruit species taxonomy has proven to be quite effective, and could be adopted here. The idea is that the results of automated matching are saved to a table that a human can further modify. See https://github.com/falling-fruit/fruitr/blob/master/vignettes/imports.md#match-names-to-falling-fruit-types.