include ios / md fonts via vite

[j3n57h0m45]

Current implementation of adding fonts for svelte includes manually copying the fonts to the source folder.

With vite this is not necessary as it can be automated. As such we can drop bothe file: icons.css file and dependency cpy-cli. For svelte it works just fine - so it might be possible to extend this patch to vue and react, too.

Note: As far as I could tell only the "regular" (filled) variant of material-icons` is required to support the framework7 md theme.