docs(ecosystem): add fastify-sqlite (#4274)

docs/Guides/Ecosystem.md

@@ -517,6 +517,8 @@ section.
 - [`fastify-split-validator`](https://github.com/MetCoder95/fastify-split-validator)
   Small plugin to allow you use multiple validators in one route based on each
   HTTP part of the request.
+- [`fastify-sqlite`](https://github.com/Eomm/fastify-sqlite) connects your
+  application to a sqlite3 database.
 - [`fastify-sse`](https://github.com/lolo32/fastify-sse) to provide Server-Sent
   Events with `reply.sse( … )` to Fastify.
 - [`fastify-sse-v2`](https://github.com/nodefactoryio/fastify-sse-v2) to provide