Add new PLUGIN_RUN action type and new plugins.plugin handlers 1. If external library...

Add new PLUGIN_RUN action type and new plugins.plugin handlers 1. If external library is commerical source and not opensource, we cannot include/build the library within edje. 2. If external library does not use general encodable sources, we...

Summary:
...cannot encode those things into edje.

In our case, we need vibration when longpressed. But those files are not
audio or image and cannot be encoded into edje. Also, this library is not
opensource so should not be linked directly with edje.
So we should call vibration API by using this plug-in.

Reviewers: raster, cedric, seoz, Hermet

CC: cedric
Differential Revision: https://phab.enlightenment.org/D588