[Doing-306][iOS] Improve the processing logic of file path and support more path forms.

1. absolute path which starts with “/” or “file://”
2. cdvfile://localhost/<filesystemType>/<path to file>
3. relative path which is relative to app workspace
[Doing-306][iOS]Invoke file plugin resolveFilePath: method to process file path
[Android]Security plugin supports file url 'cdvfile://localhost/<filesystemType>/<path to file>'