Build out UI for tree counts for stacked coordinate /imprecise GPS trees

[zoobot]

Some trees have all the same coordinates. They may may also be the same type of tree. Due to the way our id is created, this creates collisions with the id so we are keeping a count of those trees.

https://github.com/waterthetrees/tree-id/blob/main/index.js

@mwpark2014 added a UI idea for showing those tree stacks here: waterthetrees/wtt_db#50 (comment)