Add lineage nested list style plugin

I'm working on a style plugin for lineage that would allow terms to be nested indefinitely based on their lineage. I propose including this as a part of the lineage module since it would be a useful and expected feature for using lineage with views. References and related issues:

Views:
#502348: How group display by mutliple fields?

Views bonus pack:
#346324: Upgrade Lineage Nested to D6

Lineage:
#555316: Views 2: Remove   and markup from field rendering
#507472: Fix weight string handling for D6

Related forum topic:
http://drupal.org/node/435542

I will attach a patch with the style plugin once I am done with it.