chore: bump version to 3.0.6 in package.json, Cargo.toml, Cargo.lock, and tauri.conf.json; remove unused styles in Launch.svelte

src-tauri/tauri.conf.json

@@ -1,7 +1,7 @@
 {
   "$schema": "https://schema.tauri.app/config/2",
   "productName": "EZPPLauncher",
-  "version": "3.0.5",
+  "version": "3.0.6",
   "identifier": "farm.EZPPFarm.Launcher",
   "mainBinaryName": "ezpplauncher",
   "build": {