feat(core): window, shortcut and clipboard API calls on main thread (#2659)

Author: lucasfernog

.changes/main-thread-api-calls.md

@@ -0,0 +1,6 @@
+---
+"tauri": patch
+"tauri-runtime-wry": patch
+---
+
+Allow window, global shortcut and clipboard APIs to be called on the main thread (except window's `close` and `create_window`).