[Plugins] Convert to eslint

[janpio]

Some plugins are still using jshint or no linting at all. Those should be converted to use eslint as most Cordova core plugins already do.

To convert:

• Convert to eslint cordova-plugin-media#233
• Convert to eslint cordova-plugin-splashscreen#219
• Convert to eslint cordova-plugin-statusbar#141
• Convert to eslint cordova-plugin-screen-orientation#50

[GedasGa]

cordova-plugin-screen-orientation does have jshint.

And I don't think we need linting in cordova-plugin-whitelist. It only has one .java file.

I'll try to proceed with others.

[janpio]

Updated the TODO (and linked issues) per your comment

[breautek]

Closing in favour of a much more progressed tracking ticket at #142