feat: support minimizing window to tray on close (#41)

fix: grant set_skip_taskbar permission through default capability

chore: align settings casing and defaults between Rust and frontend

Co-authored-by: Jason <farion1231@gmail.com>

src-tauri/capabilities/default.json

@@ -9,6 +9,7 @@
     "core:default",
     "opener:default",
     "updater:default",
+    "core:window:allow-set-skip-taskbar",
     "process:allow-restart",
     "dialog:default"
   ]