Feature: Weighting metadata preference for WPT dashboard or Interop scoring (file | subtest | other?)

[cookiecrook]

Feature: Weighting metadata preference for WPT dashboard or Interop scoring (file/subtest/other)

I noticed weighting for this directory was giving 33% weight to 2% of the subtests. In this particular case, the test files were broken up arbitrarily for authoring convenience, so weighting evenly per subtest failure would be a better choice.

However, that's not always the case in other directories... /encoding tests for example would count for ~60% of the WPT score if all subtests were weighted evenly. So that wouldn't be the best solution either.

Perhaps in wpt-metadata, a top-level directory or subdirectory could hint which choice [ file | subtest | other? ] would be a better selection for scoring Inerop and other WPT CI results.