Add search result suggestions in package search bar

[DaniruKun]

Currently, when inputing a search query in the package search bar, there are no suggested results:

It would be great if there were search result suggestions on the same page.

For example, something as basic as how it is done on rubygems.org would be sufficient:

Minimal PoC features

• Suggestion datalist only on the homepage (root path)
• Very basic rules for displaying results, re-use existing search engine and show top N results (e.g. no more than 10)
• Just present package names initially, without extra metadata
• Most likely a LiveView will be needed for the index page

[ericmj]

If anyone is interested in implementing this let us know. I believe it could be a nice use case for LiveView.

[DaniruKun]

@ericmj I am up for making a PoC, I had some experience with LiveView and search before 😊

[DaniruKun]

After a fair bit of sweat, you are looking at the front page rendered using a LiveView 😄 now the hard part is optimising assigns, integrating the suggestions, and tying it together with the rest nicely.

[DaniruKun]

It's a bit difficult to do much with styles in a "Bootstrapish" way since it is quite old (v 3.4), so I hacked in something like this. Will tidy it up a bit more perhaps, but I think this is good enough already.