Fix demo page

[DrRataplan]

Use vite instead of old snowpack. Works a lot easier, just requires some type imports in index.ts.
@bwrrp , you're on windows now right? Can you give this a quick run?

[bundlemon]

BundleMon

Unchanged files (2)

Status	Path	Size	Limits
✅	fontoxpath.esm.js	78.54KB	-
✅	fontoxpath.js	78.43KB	-

No change in files bundle size

Final result: ✅

View report in BundleMon website ➡️

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Current branch size history | Target branch size history

[coveralls]

coverage: 91.567%. remained the same
when pulling 3f7c4ab on demo
into 67b87f8 on master.

[bwrrp]

No config needed? Nice!

Works perfectly on WSL, but I had to delete package-lock.json on Windows to work around a bug in npm where it didn't install @rollup/rollup-win32-x64-msvc ☹️
That was clearly explained in the error though, so approving anyway.

[DrRataplan]

Awesome! That sounds scary. But happy to hear it works!