feat(bikeshare): add Detroit, Pittsburgh, Aspen and Kona & Hilo

Register four live US systems on Lyft's PBSC platform: MoGo (Detroit, 81
stations), POGOH (Pittsburgh, 60), WE-cycle (Aspen, 101) and HIBike (Kona
and Hilo, 23). The proxy already allows *.publicbikesystem.net, so no
server change is needed. HIBike's centre sits between Kailua-Kona and
Hilo so a camera over either town loads the whole system.

The test checks each system is registered, passes the proxy's host and
endpoint checks, and has an activation radius covering its farthest
station as measured against the live feed.

CHANGELOG.md

@@ -1,5 +1,9 @@
 # Changelog
 
+- Add Detroit (MoGo), Pittsburgh (POGOH), Aspen (WE-cycle) and Kona & Hilo
+  (HIBike) to the GBFS bikeshare registry, the layer's first stations in
+  Michigan and Pennsylvania.
+
 - Treat explicitly current, complete empty vessel coverage as a successful update,
   clearing obsolete contacts while retaining stale or incomplete snapshots.