check_te: improve which categories are returned

[RobLBaker]

1. change name to check_fed_te()

2. some way to give the user the options for which categories are returned because what a park is concerned about may vary from park to park. Some parks may treat "candidates" or "proposed for listing" may actually protect those and some may not.

Add a parameter that selects these: ALL, LISTED, NOT LISTED, custom (specific code/list of codes)

3. It may be more important to return multiple codes in a single category. For instance, "proposed delisted" might be too confusing and cause people to think something has actually been delisted rather than proposed for delisting. Spend some time thinking about the use-cases for the function and what useful categories would be and would contain (and of course return the full code for those that need it too).