Provide Get and Put instances for Scala Seq for Doobie module

[salamonpavel]

Background

There is no built-in Put and Get for Scala Seq type, only for List. We should provide it as part of the library.

implicit val get: Get[Seq[String]] = Get[List[String]].map(_.toSeq)
implicit val put: Put[Seq[String]] = Put[List[String]].contramap(_.toList)

[lsulak]

Actually does this mean that if we have a Sequence of Integers, or something else other than String, that we would need an extra pair of these get & put for each, right?

[salamonpavel]

Actually does this mean that if we have a Sequence of Integers, or something else other than String, that we would need an extra pair of these get & put for each, right?

I guess we could define it as generic implicit method implicit def getForSeq[T]: Get[Seq[T]]. We could also do a conversion to List in our application code and in such case we wouldn't need this at all. It's up to a discussion.