Add basic project search

Something basic will do using native database quries will be fine. See the prisma docs
https://www.prisma.io/docs/concepts/components/prisma-client/filtering#filter-conditions

We should be able to use "contains" on the title and description for a very basic search.

We might add elastic search or algolia later for a more advanced implementation

if you want to pick this one up, let me know and I'll try and get you designs soon. But it's basically going to be a search field, then displaying projects with the projects cards that already exist on the home page https://cadhub.xyz/