Add support for 1080p in Docked mode

[TooTallNate]

Subscribe to the appletHook to get a callback when the operation mode changes:

void onAppletEvent(AppletHookType type, void* param) {
    if (type == AppletHookType_OnOperationMode) {
        bool docked = appletGetOperationMode() == AppletOperationMode_Console;
		// invoke JS function to trigger "resize" event
    }
}

// in main
    AppletHookCookie cookie;
    appletHook(&cookie, onAppletEvent, NULL);

• Trigger a window "resize" event
• If in framebuffer mode, re-create the framebuffer with the appropriate resolution
• Is this behavior default, or opt-in?
  • If opt-out, what is the mechanism? Maybe preventDefault() on the "resize" event?

[LauraWebdev]

FWIW: default behaviors for browsers is a resize event when maximizing the window