extract: grab property info

[Luolc]

We need to update our extract info injection code. To generate the property info as well.

For a module, there would be

• property list
• acceptable, default, required token list

For the property, we need property map, and maybe property type. Type could be common string, regex, integer, a set of string and so on.

reference in checkstyle: https://github.com/checkstyle/checkstyle/blob/master/src/test/java/com/puppycrawl/tools/checkstyle/internal/XdocsPagesTest.java#L931

[rnveach]

Please expand issue to what information we will be obtaining.

[Luolc]

Updated the first post.