[Feature Request] More robust file picker on Linux

[Ghissueguy228]

Feature Request

The Problem

Currently, when using Amulet on Linux, the application relies on the GTK file picker, which has some limitations when dealing with FUSE mounts or networked file systems. This restricts users from easily accessing non-local or networked files, such as those stored on remote servers or other devices.

Feature Description

Integrate support for the native file explorers (e.g., Nautilus for GNOME, Dolphin for KDE) so users can seamlessly navigate their system and networked files, or provide a way to access non-local or networked files directly (e.g., SMB shares, NFS, or remote servers).

Additional context

This would make it easier to manage worlds on a remote server instead of needing to download and upload the save each time.

[gentlegiantJGC]

Pull request welcome