Add ranked "and n more" reporting module

[MichaelRFairhurst]

I just wrote the following:

from IncompleteInitialization init, CheckedField f, int total, int ranked, string suffix
where
  not isExcluded(init, Classes4Package::nonStaticMemberNotInitBeforeUseQuery()) and
  total = count(init.getField()) and
  f =
    rank[ranked](Field candidate |
      candidate = init.getField()
    |
      candidate order by candidate.getName()
    ) and
  ranked <= 3 and
  if total > 1 then suffix = " (and " + (total - 1) + " more)" else suffix = ""
select init, init.getKindStr() + " does not initialize non-static data member $@" + suffix + ".", f,
  f.getName()

And realized this should be part of qtil using a module.

The module should probably look something like:

// signature
signature module LimitResultsConfigSig {
  predicate finding(x, y, string)
  string message(x, y, string remaining);
  string orderBy(x)
  int maxResults()
}

// usage
module LimitIncompleteInitConfig implements LimitResultsConfigSig {
  predicate problem(IncompleteInitialization init, Field f) {
    f = init.getField()
  }
  string message(IncompleteInitialization init, Field f, string remainingStr) {
    result = init.getKindStr() + " does not initialize $@" + remainingStr + "."
  }
  int maxResults() { results = 3 }
  string orderBy(Field f) { result = f.getName() }
}

import LimitResults<LimitIncompleteInitConfig>

This may be implementable in common, or it may need to be implemented in the language packs.