openFile function
Opens a file from the given file path using the default application.
This is the platform-specific implementation for mobile and desktop platforms
(when dart:io is available). The file is opened using the platform's
default application for that file type via openfilex.
Parameters:
filePath: The path of the file to open
Throws:
- May throw exceptions if the file cannot be opened.
Implementation
Future<void> openFile(String filePath) async {
await OpenFilex.open(filePath);
}