Browsing Phase Data Type to Store Information

This adds the new 'tapped entry list' metric object that captures all
the browsed data prior to final selection. This will need to
be put into a collection in order when used, but allows us to know about
every tapped entry, regardless of final outcome.

Bug: 270403549
Test: To be chained in later, builds for now
Change-Id: Ibb89e66a5b641b493d79d08d10ec68b7bf0c34c9