Add relaunch, reset, delete download cache, delete invalid games buttons to settings page

src-tauri/capabilities/default.json

@@ -20,6 +20,7 @@
     "core:window:allow-request-user-attention",
     "core:webview:allow-create-webview-window",
     "fs:default",
+    "fs:allow-remove",
     "dialog:default",
     "dialog:allow-open",
     "notification:default",