Infra3D Integration: Sidewalk Width Measurement

[jonfroehlich]

As part of the Infra3D integration, Hoda and the Zurich team would like us to add in functionality to help the user (accurately) manually measure the width of a sidewalk. This takes diligence as one needs to take into account the street scene perspective and draw an orthogonal line out from the building to the curb. Hoda provides a demo video below. I resized it to 600x to fit into GitHub's Issue upload limit of 10MB.

LineFeatureMeasurement_HA-ezgif.com-resize-video_600x338.mp4

Here's the original 1920x1080 video.