Feature request: meeting_classify() by subject line

[martinctc]

This is a feature request for a meeting_classify() (or similarly named) function that classifies meetings in a meeting query based on the keywords that appear in them. Each classification is for ONE binary match, and the API could look something like:

meeting_classify(
  mt_data,
  category = "Customer",
  keywords = c("Customer", "Sales")
)

In this case, you will get a column called Customer and a TRUE or FALSE flag to signify whether that keyword has appeared. This can be wrapped into a wider function that performs multiple classifications in the meeting, and enhance the current meeting_tm_report().

[moralec]

Some things to keep in mind:

1. We already do this within subject_validate (lines 166-170). Once we implement this we can re-code that function so it uses this general function.
2. In the past we have used some common meeting terms for a general clasification. Probably best no to hard code these but we can use it as the basis of a blog article.