Add support for parsing test titles with parameters (such as test.each)

[jesperorb]

When using parameters in test.each blocks, such as "validate: $name", the lib cannot parse this test title as the resolved name being printed to the user. The reporters main way of connecting tags to test blocks is via the test title. But when the test title is dynamic the matching fails.

Find a way to match a resolved test title to a parameterized test title
validate: $name -> validate: firstName.

This is just one example: full list of how titles can be formatted can be found here:
https://nodejs.org/api/util.html#utilformatformat-args