Property editor: Show description of each property

One of the main use cases I'm thinking of for the Property Editor is to help new developers discover what some of the main properties are, and what they do. To make such discovery easier I propose we show a bit of domentation text next to each property.

Sample visualization (see small text below the properties):

Start by locating the Property Editor entry point in DevTools and reviewing how its properties are currently presented and documented. The work is done when each property displays a concise description beside it, matching the proposed visualization.

Written by the indexing model from the issue text.