Remove PackageTypes from the match.Matcher interface

[kzantow]

During the recent v6 refactoring, investigation of the matching processes led me to believe that matchers should not be directly tied to specific package types. An example of something that causes issues is golang, where go modules should be matched one way, but go stdlib should fall though to standard matching. The stock matcher, for example, could be configured to skip CPE matching for certain types, rather than requiring effectively duplicating the stock matcher to specific package type matchers only to configure them separately.