Compress static site generated files

[pinage404]

#344 added Static Site Generation which works great

An optional steps could be added to compress generated files

https://docs.gitlab.com/user/project/pages/introduction/#serving-compressed-assets

[pinage404]

I do like this https://gitlab.com/pinage404/moku/-/blob/3bef350eded383e0d6a68ef4d73776a2cb23d8a6/generate_static_site.sh#L27