Please add file selection dialog function, which is necessary and commonly used

[tzSharing]

Please add a file selection dialog function, which is necessary and often used.

Demand scenario: I need to perform SHA256 calculation on the selected file, but currently I can only manually enter the file path, which is too slow and exhausting.

Like this：

Windows native

Java GUI

[ghost]

Unfortunately, there are still a lot of things missing to implement FileChooser. Contributions are welcomed!