[Feature] Show coverage area when selected collection site entries include location

[gis-wes]

As a data collection reviewer of sites with location captured for each entry,
I want to see the footprint of collected data for a reviewed site in the web app,
so I know the relation of collected data for the site without visiting each entry.

Example questions this attempts to answer with a glance:
1. Are the features inside or outside the polygon?
2. Where are features relative to the original pin drop?

Given a collection site exist with a single entry
And a location is captured for each entry at the site,
When the collection site is the focus of the web app,
Then the single feature is displayed.

Given a collection site exist with two entries
And a location is captured for each entry at the site,
When the collection site is the focus of the web app,
Then a bounding box for the two points will display
And the bounding box will use a high transparency on background fill.

Given a collection site exist with three or more entries
And a location is captured for each entry at the site,
When the collection site is the focus of the web app,
Then a convex hull of all points will display
And the convex hull will use a high transparency on background fill.