Support all window event handlers

[caroso1222]

Is your feature request related to a problem? Please describe.

This is related to the issue raised in #391. Apart from unbeforeunload and popstate, there are some more window events that should be supported in the element <svelte:window>.

Describe the solution you'd like

I want to be able to use any of the supported window events without typing errors. For example:

<svelte:window on:offline={handler}>
<svelte:window on:pageshow={handler}>
<svelte:window on:beforeprint={handler}>

The full list can be taken from lib.dom.d.ts:

interface WindowEventHandlersEventMap {
    "afterprint": Event;
    "beforeprint": Event;
    "beforeunload": BeforeUnloadEvent;
    "hashchange": HashChangeEvent;
    "languagechange": Event;
    "message": MessageEvent;
    "messageerror": MessageEvent;
    "offline": Event;
    "online": Event;
    "pagehide": PageTransitionEvent;
    "pageshow": PageTransitionEvent;
    "popstate": PopStateEvent;
    "rejectionhandled": PromiseRejectionEvent;
    "storage": StorageEvent;
    "unhandledrejection": PromiseRejectionEvent;
    "unload": Event;
}

Describe alternatives you've considered

I first came around this problem when I was playing with the back button and the history API. I added the methods I needed in #392. Now, I think it makes sense to add support for the full spec instead of just those 2 methods.