Add shard docs pages to website

[mdwagner]

I was thinking about this recently, but we only have some of the shards include their crystal docs pages in their READMEs, but really we should have them accessible on the website too. Especially, if we want to include specific versions of Lucky.

[jwoertink]

For extra context, the docs are listed on https://luckyframework.org/ecosystem, but some are missing

related: https://github.com/luckyframework/website/issues/78 related: https://github.com/luckyframework/website/issues/725

[mdwagner]

Am I crazy? How do you get to a page with that link? I can't find it anywhere

[jwoertink]

Learn > Ecosystem