check files integrity

# Feature Request
basically a self file checker.....
## Motivation Behind Feature

its just to simple for people to build hooks when adding and removing plugins ...
a type of cross checking its install....
mush simple then not knowing where the cause is whee you have uninstall everything

Before you make a pack to publish run i run the diagnostic on cordova
ohhhh found unwanted file in folder....
ohhhh this one has been tamped with....
ohhh your missing a file.....

## Feature Description

## Alternatives or Workarounds