largetype: option to show output of a deferred script

[averagebarb]

Seeking the ability to execute and use the results of a script upon triggering a result item's largetype. 

 

This would be particularly useful when the largetype text desired for any result item is time-expensive to pre-compute on a large scale, so it's best to defer it to when the user explicitly requests a particular item's largetype.

 

A simple backwards-compatible way to achieve this could be to support a new "largetypescript" parameter which can contain a bash script.

Example:

largetypescript: {type: "command", command: "/bin/bash python get_expensive_computation_result.py 'selected_item_id'"}