A couple of crates for Databases and Pools

[elpiel]

We use in our projects a couple of other tools I'd like to share with you:

• tokio-postgres
• Deadpool (deadpool-postgres, etc)
• bb8 (bb8-postgres, etc)

Serde has a full range of serializers, formats and helper macros too.

I can share some of them if anyone is interested

[anshulrgoyal]

I am happy to add these tools. It will be great if u can create an PR.