chore: refactor CLI app with new modules for seperation of concerns, reusable components and consistent styling

soulseek-rs/src/models/file_display_data.rs

@@ -0,0 +1,9 @@
+#[derive(Clone)]
+pub struct FileDisplayData {
+    pub filename: String,
+    pub size: u64,
+    pub username: String,
+    pub speed: u32,
+    pub slots: u8,
+    pub bitrate: Option<u32>,
+}