feat: add LMFS task visualizations (#132)

* feat: add LMFS task visualizations

Shows planned location vs actual location for all tasks.  Time-sider
controls only the status of the task, not it's presence on the map.

* fix: add basic tests for LMFS tasks

Created new test and updated the lmfs demo data to a dataset
I recently generated c977899

Author: googlemaps-bot

Tasks.md

@@ -0,0 +1,11 @@
+# LMFS Tasks
+
+Displays all tasks assigned to the vehicle.   Time slider allows replaying task state/outcome
+changes.  
+
+The red or green arrows indicate the delta between the planned location and outcome location
+for the task.
+
+Task markers are clickable and will show basic data in the json viewer.
+
+![Screenshot](screenshots/tasks.png)