Include the format of each table column within a result set

[danpanaite]

Is your feature request related to a problem? Please describe.
I currently need to dive into the resultSet.loadResponse.annotation object to grab the formats of each measure or dimension in my result set, in order to properly render any boolean, currency, percent, or date fields. The tableColumns function currently does not include the format of the column.

Describe the solution you'd like
The resultSet.tableColumns function could return format and type properties that is obtained from the corresponding dimension or measure. The same pattern for populating the title and shortTitle could be followed for format, since both measures and dimensions can have a format.

Describe alternatives you've considered
Alternatively, the result.tablePivot function could run through a format processing step before returning the list of rows. This would enable the user to render a table without having to build custom formatting logic.