Address breaking adapter API changes in #4192

[Theo-Steiner]

Up until a few days ago @FireMakeThunder's fix for the previous breaking adapter changes worked great, but in rapidly changing svelte-kit land nothing stays the same and there again have been breaking changes to the adapter API, that will need to be addressed for this adapter to work properly.
sveltejs/kit#4192 moved the prerendering from the adapt to the build step and introduced a config option for adapter-static like behaviour at config.kit.prerender.default.

Until a PR for addressing this breaking change is merged, you can still use this adapter by simply installing npm install -D Theo-Steiner/sveltekit-adapter-browser-extension and modify your config to look like this:

import adapterBrowserExtension from 'sveltekit-adapter-browser-extension';

/** @type {import('@sveltejs/kit').Config} */
const config = {
	kit: {
		prerender: {
			default: true
		},
		adapter: adapterBrowserExtension(),
		appDir: 'ext'
	}
};

export default config;

[Theo-Steiner]

this also addresses #6

[antony]

Thank you!