Add truth taus at particle level to the AnalysisTop output

This MR adds truth taus to particle level of AnalysisTop.

There are still 2 outstanding issues:

• Need to decide what to do with dressing
• Need to decide what to do with overlap removal

Tagging people who may be interested: @kgrevtso, @tpelzer, @tholm, @omajersk, @smergelm, @mvanadia This is a rather large MR, so comments are appreciated