test: Added download test and made app more testable in general

fix: Store Downloads not properly working on steam deck
fix: Removed linux shortcuts implementation

package.json

@@ -87,6 +87,7 @@
     "@tanstack/react-router-ssr-query": "^1.157.17",
     "@tanstack/router-plugin": "^1.157.16",
     "@tanstack/zod-adapter": "^1.162.4",
+    "@types/adm-zip": "^0.5.8",
     "@types/bun": "latest",
     "@types/fs-extra": "^11.0.4",
     "@types/ini": "^4.1.1",
@@ -96,6 +97,7 @@
     "@types/react-dom": "^19.2.3",
     "@types/unzip-stream": "^0.3.4",
     "@vitejs/plugin-react": "^5.1.2",
+    "adm-zip": "^0.5.16",
     "animate.css": "^4.1.1",
     "app-builder-bin": "^5.0.0-alpha.13",
     "babel-plugin-react-compiler": "^1.0.0",